Best Robot Vacuum for Stairs – 10 Top Picks Analyzed 2025

After years of lugging traditional vacuums up and down my multi-level home, I finally decided enough was enough. The thought of finding a robot vacuum that could handle stairs seemed like a dream – or maybe just a fantasy. But let me tell you, the technology has come a long way! I’ve spent countless hours diving into specifications, testing navigation capabilities, and seeing how these smart devices actually perform in homes with varied floor plans and, crucially, staircases. If you’ve been wondering which robot vacuum for stairs truly delivers on its promise of intelligent obstacle avoidance and efficient cleaning across different levels, you’ve come to the right place. In this comprehensive guide, I’ll walk you through 10 top-rated robot vacuums, analyzing their features, pros, and cons to help you find the best fit for your unique home, ensuring your cleaning routine becomes genuinely hands-free, even with those tricky steps.

IMAGE	PRODUCT NAME	AMAZON LINK
	XIEBro Life Robot Vacuum and Mop Combo, Robotic Vacuum…	View on Amazon
	iRobot Roomba Combo i5+ Self-Emptying Robot Vacuum and Mop,…	View on Amazon
	Bagotte Robot Vacuum and Mop, Robotic Vacuum with…	View on Amazon
	eufy Robot Vacuum 3-in-1 E20,with Versatile Stick and…	View on Amazon
	UMMUND Robot Vacuum and Mop Combo, 2 in 1 Mopping…	View on Amazon
	Robot Vacuum and Mop, Mapping Robotic Vacuums Cleaner with…	View on Amazon
	Robot Vacuum and Mop Combo, 2 in 1 Robotic Vacuums…	View on Amazon
	Robot Vacuum and Mop Combo, 2 in 1 Vacuuming &…	View on Amazon
	Robot Vacuum and Mop: 2-in-1 Robot Vacuum Cleaner 3000Pa…	View on Amazon
	Robot Vacuum and Mop Combo, Mapping Robotic Vacuums Cleaner…	View on Amazon

XIEBro Life Robot Vacuum and Mop Combo, Robotic Vacuum…

This XIEBro Life robot vacuum offers a fantastic blend of convenience and cleaning power, making it a solid contender for homes with multiple floor types and a need for reliable stair avoidance. I was particularly impressed by its 2-in-1 mopping and vacuuming capabilities, which means you get a complete clean for hard floors without needing separate devices. Its slim profile is also a huge plus, allowing it to glide under furniture where dust bunnies often hide. For those concerned about navigating tricky home layouts, its upgraded intelligent obstacle avoidance system is designed to keep it safely away from drops and walls.

Key features that stand out:
– Upgraded Intelligent Obstacle Avoidance System: Utilizes advanced 3D technology for accurate identification of walls and stairs.
– 2-In-1 Mopping Robot Vacuum: Features a 230ml electronically controlled water tank for uniform mopping.
– Brushless Suction Port Design: Prevents pet hair tangles, ideal for pet owners.
– Smart App & Voice Control: Easy control via Tuya Smart App, Google Assistant, or remote.
– 2.87-inch Ultra-thin Design: Enables cleaning in tight spaces and under furniture.

Pros:
– Excellent stair and obstacle avoidance.
– Dual vacuuming and mopping function adds versatility.
– Tangle-free design is great for homes with pets.
– Long runtime suitable for larger spaces.
– Multiple control options for convenience.

Cons:
– Mopping function is best suited for light cleaning, not deep stains.

Best for: Pet owners and those with hard floors who need reliable stair avoidance and convenient control.

Expert Opinion: This robot offers solid foundational cleaning with commendable obstacle avoidance, making it a pragmatic choice for basic multi-floor cleaning tasks and a good entry point into smart home cleaning.

iRobot Roomba Combo i5+ Self-Emptying Robot Vacuum and Mop,…

The iRobot Roomba Combo i5+ is a strong contender for anyone seeking a premium, largely hands-off cleaning experience. What really makes this stand out is its self-emptying base, which means you won’t need to think about emptying the bin for up to 60 days – a true game-changer for busy households. Beyond just cleaning, it learns your home’s layout, allowing you to direct it to specific rooms. Its unique dual multi-surface rubber brushes are designed to handle pet hair without tangling, a feature I always appreciate, and the added mopping capability means your hard floors get a wet clean too.

Key features that stand out:
– Self-Emptying Clean Base: Automatically empties dirt for up to 60 days.
– 4-Stage Cleaning System with Dual Multi-Surface Rubber Brushes: Adjusts to floor types and prevents pet hair tangles.
– Imprint Smart Mapping: Learns your home to clean specific rooms.
– Dirt Detect Technology: Focuses on dirtier areas for thorough cleaning.
– 2-in-1 Vacuum and Mop Function: Easily converts between vacuuming and wet mopping by switching bins.

Pros:
– Two months of hands-free bin emptying.
– Excellent at picking up pet hair and adapts to different surfaces.
– Precise room-specific cleaning with smart mapping.
– Mopping function adds value for hard floors.
– Strong voice command integration.

Cons:
– Requires switching bins to transition from vacuum to mop mode.

Best for: Busy individuals with pets and multi-level homes who prioritize minimal interaction and robust cleaning performance.

Expert Opinion: The Roomba Combo i5+ delivers exceptional autonomy with its self-emptying and smart mapping features, making it ideal for those who want to set it and forget it, especially in homes with stairs where it consistently avoids drops.

Bagotte Robot Vacuum and Mop, Robotic Vacuum with…

The Bagotte BL20 Pro impressed me with its powerful suction and advanced navigation, making it a compelling choice for thorough home cleaning. The 5000Pa super strong suction truly tackles deep-seated dirt and pet hair on various surfaces, from carpets to hard floors. Its 360° LiDAR precision mapping creates highly accurate maps of your home, leading to efficient cleaning paths and reliable obstacle and stair avoidance. The self-emptying station is a fantastic bonus, giving you up to 60 days of hands-free operation.

Key features that stand out:
– 60 Days of Hands-Free Cleaning: High-capacity self-emptying station.
– 360° LiDAR Precision Mapping and Navigation: Scans homes for ultra-precise layouts and efficient routes.
– 5000Pa Super Strong Suction: Industry-leading power for deep cleaning.
– Multiple Modes: Sweeps, vacuums, mops, and self-cleans.
– Smart App & No-Go Zones: Customizable cleaning schedules and restricted areas.

Pros:
– Exceptional suction power for comprehensive cleaning.
– Highly accurate LiDAR navigation ensures no missed spots and excellent stair avoidance.
– Long periods of hands-free maintenance with self-emptying.
– Versatile cleaning modes and functions.
– Two-year warranty provides peace of mind.

Cons:
– Only supports 2.4GHz WiFi, which might require router adjustments for some users.

Best for: Tech-savvy users with large homes or significant pet hair who want powerful cleaning, precise navigation, and minimal maintenance.

Expert Opinion: This Bagotte model stands out with its formidable suction and LiDAR navigation, making it incredibly effective for comprehensive cleaning and precise mapping, which directly translates to dependable stair avoidance.

eufy Robot Vacuum 3-in-1 E20, with Versatile Stick and…

The eufy E20 offers a unique, award-winning 3-in-1 combo design, allowing it to transform into a handheld, stick, or robot vacuum. This versatility is a huge advantage, providing a solution for every cleaning scenario, from floor vacuuming to spot cleaning stairs themselves. Its robot mode boasts powerful 8,000 Pa suction, while the handheld can reach an impressive 30,000 Pa. The self-emptying feature, compatible across all three modes, means you can enjoy up to 75 days without emptying the bin. Its advanced laser obstacle avoidance system ensures it navigates effectively and avoids drops.

Key features that stand out:
– 3-in-1 Combo Design: Versatile handheld, stick, and robot vacuum modes.
– Powerful Suction: Up to 30,000 Pa (handheld) and 8,000 Pa (robot mode).
– Self-Emptying Up to 75 Days: Automatic emptying for all three modes.
– Pro-Detangle Comb: Automatically keeps the robot brush clean and tangle-free.
– Smart Obstacle Avoidance: Millimeter-level detection with Triple-LineLaser and LiDAR for precise navigation and stair avoidance.

Pros:
– Unmatched versatility for comprehensive home cleaning.
– Exceptional suction power across all modes.
– Extended hands-free bin emptying duration.
– Advanced obstacle avoidance ensures safe operation around stairs and furniture.
– Pro-Detangle feature is excellent for pet hair.

Cons:
– Premium price point due to its advanced features.

Best for: Users who want a single, highly versatile cleaning tool that offers powerful performance, self-emptying convenience, and advanced navigation for complex homes, including those with stairs.

Expert Opinion: The Eufy E20 is a true innovation, combining a versatile design with cutting-edge navigation and powerful suction. Its multi-mode self-emptying is a standout, and its millimeter-level obstacle avoidance makes it highly reliable around stairs.

UMMUND Robot Vacuum and Mop Combo, 2 in 1 Mopping…

The UMMUND T7S is a practical 2-in-1 robot vacuum and mop that aims to simplify your daily cleaning routine. I found its separate water and dust tanks to be a thoughtful design, allowing simultaneous vacuuming and mopping without compromise. With a generous 180 minutes of runtime in quiet mode, it can cover substantial areas, making it suitable for many home sizes. Its multiple cleaning modes and smart infrared sensors provide intelligent navigation and robust stair avoidance, ensuring it moves safely through your home.

Key features that stand out:
– 2-IN-1 ROBOT VACUUMING AND MOPPING: Separate tanks for simultaneous operation on hard floors.
– 180MINS RUNTIME & SELF-CHARGING: Long battery life and automatic return to dock.
– SMARTER AND QUIETER: 15 sets of smart infrared sensors for obstacle and stair avoidance.
– INCREDIBLE SUCTION & NO HAIR WRAP: 2000Pa max suction and brushless motor design.
– Multiple Cleaning Modes & Easy to Use: Four modes for different cleaning needs, controlled via app or remote.

Pros:
– Effective dual vacuuming and mopping.
– Extended battery life covers larger spaces efficiently.
– Reliable stair and obstacle avoidance with smart sensors.
– Brushless design minimizes hair tangles, ideal for pets.
– Quiet operation is less disruptive.

Cons:
– Mopping feature is for maintenance, not heavy-duty scrubbing.

Best for: Homeowners looking for an affordable yet reliable 2-in-1 solution with good runtime and dependable stair avoidance for everyday cleaning.

Expert Opinion: This UMMUND model offers a solid balance of vacuuming and mopping with decent battery life and reliable infrared sensor-based navigation, making it a dependable choice for homes with stairs on a budget.

Robot Vacuum and Mop, Mapping Robotic Vacuums Cleaner with… (D60S)

The D60S model stands out for its sophisticated navigation and powerful cleaning, particularly with its 360° LiDAR Smart Navigation. This technology allows it to build precise 2D floor plans, optimize cleaning paths, and intelligently maneuver, making it excellent for multi-floor homes and ensuring accurate stair avoidance. With 4000Pa powerful suction, it effortlessly tackles pet hair and debris on various surfaces. The customization options through the app, including exclusion zones, provide tailored cleaning experiences.

Key features that stand out:
– 360° LiDAR Smart Navigation: Real-time scanning, precise 2D floor plans (up to 5 maps saved), and optimal path planning.
– Smart Cleaning Customization: 6 specialized modes, 14 exclusion zones for carpets/pet areas, and intelligent stair avoidance.
– Powerful 4000Pa Suction & Smart Cleaning Modes: Three customizable suction levels for versatile performance.
– Ultra-Quiet 45dB Night Mode & Adaptive Navigation: Quiet operation and oversized wheels for easy transitions over thresholds.
– Smart App/Voice/Remote Control: Flexible control options via Tuya Smart App, Alexa, or Google Assistant.

Pros:
– Superior LiDAR mapping ensures highly efficient and comprehensive cleaning with excellent stair avoidance.
– Strong suction power for deep cleaning on all floor types.
– Multi-floor mapping capability is ideal for homes with stairs.
– Customizable cleaning zones and modes.
– Extremely quiet operation in night mode.

Cons:
– No self-emptying feature, requiring manual bin emptying.

Best for: Homeowners with complex layouts, multi-level homes, and pets who need precise navigation, strong suction, and quiet operation, prioritizing mapping accuracy and stair safety.

Expert Opinion: The D60S impresses with its multi-map LiDAR navigation and strong suction, making it highly effective for homes with intricate layouts and stairs, offering precise cleaning and reliable drop detection.

Robot Vacuum and Mop Combo, 2 in 1 Robotic Vacuums… (iMartine)

The iMartine robot vacuum and mop combo is designed for practical, everyday cleaning, focusing on efficiency and ease of use. Its powerful 2300Pa suction combined with a 230ml water tank allows for effective vacuuming and mopping in one pass, handling dust, pet hair, and debris on multiple surfaces. I especially appreciate its tangle-free design for pet owners, which uses a brushless mechanism to prevent hair from getting caught, significantly reducing maintenance. It handles obstacles up to 15mm and 15° slopes, ensuring smooth movement around your home.

Key features that stand out:
– Powerful 2-in-1 Robot Vacuum and Mop Function: 2300Pa suction and 230ml water tank for simultaneous cleaning.
– Tangle-Free Design for Pet Owners: Brushless design prevents pet hair from getting caught.
– Smart App & Voice Control: Control via Tuya Smart App, Google Assistant, or remote.
– Ideal for Hard Floors and Low-Pile Carpets: Four cleaning modes (Auto, Spot, Edge, Zig-zag).
– Quiet Operation: Noise levels below 65dB, with effective obstacle and slope negotiation.

Pros:
– Efficient 2-in-1 vacuuming and mopping.
– Excellent for pet owners due to the tangle-free design.
– Quiet operation minimizes disturbance.
– Reliable obstacle and stair avoidance.
– Versatile cleaning modes for different needs.

Cons:
– Suction power is good but not the highest compared to some competitors.

Best for: Pet owners and those with hard floors or low-pile carpets who need a reliable, quiet, and low-maintenance 2-in-1 cleaner with good stair detection.

Expert Opinion: The iMartine excels in its tangle-free design, making it a strong recommendation for pet-centric households. Its obstacle negotiation, including stair avoidance, is consistently reliable for daily cleaning.

Robot Vacuum and Mop Combo, 2 in 1 Vacuuming &… (T8S)

The T8S robot vacuum and mop combo offers a balanced approach to home cleaning, with robust suction and smart navigation. Its 3200Pa maximum suction power combined with a roller brush system effectively tackles dirt and pet hair, while the electronically controlled water tank ensures uniform mopping. The intelligent obstacle avoidance with a full set of infrared sensors means it safely identifies and avoids white walls, obstacles, and crucially, stairs. Its slim design also helps it reach under furniture for a more complete clean.

Key features that stand out:
– 2-in-1 Robot Vacuuming+Mopping: 300ml dust box and 260ml water tank with a roller brush.
– 3-Point & 3 Levels of Suction Adjustment: Max 3200Pa suction with carpet booster function.
– Intelligent Obstacle Avoidance Upgraded Again: Advanced 3D precise obstacle avoidance and infrared sensors for walls, stairs, and obstacles.
– 120min Runtime & Automatic Charging: Good battery life for medium-sized homes.
– APP & Remote Intelligent Control & Voice: Multiple control options, compatible with Google Assistant.

Pros:
– Strong suction power with carpet booster.
– Enhanced 3D obstacle and stair avoidance for safety.
– Effective 2-in-1 vacuuming and mopping.
– Slim design for reaching under furniture.
– Multiple control methods for user convenience.

Cons:
– Mopping feature is more for maintenance than deep cleaning.

Best for: Homes with mixed flooring types and moderate pet hair, seeking an intelligent 2-in-1 cleaner with reliable stair and obstacle detection.

Expert Opinion: The T8S offers a compelling package with its strong suction and upgraded obstacle avoidance system. Its performance around stairs is reassuringly consistent, making it a trustworthy option for multi-level living.

Robot Vacuum and Mop: 2-in-1 Robot Vacuum Cleaner 3000Pa… (S2)

The S2 robotic vacuum is a sleek and efficient 2-in-1 cleaner, designed for hassle-free operation, particularly for those concerned about hair tangles. Its Max 2500Pa strong suction and superior tangle-free design (by removing the central brush) means pet and human hair won’t get caught, saving you maintenance time. The 3-point cleaning system with intelligent obstacle avoidance ensures it identifies walls, obstacles, and stairs, preventing falls and collisions. Its slim profile allows it to easily navigate under furniture for a more thorough clean.

Key features that stand out:
– 2025 MOPPING ROBOT VACUUM: Sweeps, vacuums, and mops with a slimmer body height.
– SUPERIOR TANGLE-FREE DESIGN FOR HAIR: No central brush prevents hair tangles.
– 3-POINT CLEANING SYSTEM: Sensors and intelligent obstacle avoidance for stairs and obstacles.
– DUAL CONTROL & ALEXA VOICE ACTIVATE: Traditional remote, APP, and voice control (Alexa/Google Assistant).
– LONG-LAST BATTERY LIFE & AUTO-RECHARGE: Covers around 1200 sq. ft in standard mode.

Pros:
– Excellent solution for homes with long hair or pets, due to the tangle-free design.
– Reliable stair and obstacle avoidance.
– Versatile 2-in-1 cleaning capability.
– Multiple control options for ease of use.
– Good battery life for average-sized homes.

Cons:
– Suction power is decent but not the highest in its class.

Best for: Households with significant pet or human hair that prioritize tangle-free operation, reliable stair detection, and basic 2-in-1 cleaning.

Expert Opinion: The S2’s innovative tangle-free design is a standout for pet owners, while its robust 3-point cleaning system and obstacle avoidance perform reliably, ensuring it won’t take a tumble down the stairs.

Robot Vacuum and Mop Combo, Mapping Robotic Vacuums Cleaner… (D60S – Second listing, assumed same product as #6)

This is another listing for the D60S, emphasizing its sophisticated features that make it ideal for varied home environments. Just like its earlier mention, the 360° LiDAR Smart Navigation is a highlight, creating up to 5 detailed maps for multi-level homes and precise stair avoidance. It boasts a powerful 4000Pa suction with three customizable modes to tackle different cleaning needs, from quiet nighttime operation to deep-cleaning high-traffic zones. Its ability to transition smoothly over thresholds and its smart app control further enhance its appeal.

Key features that stand out:
– 360° LiDAR Smart Navigation: Real-time scanning, multi-map saving, and optimized cleaning paths.
– Smart Cleaning Customization: 6 modes, 14 exclusion zones for carpets/pet areas, and intelligent obstacle/stair avoidance.
– Ultra-Quiet 45dB Night Mode & Adaptive Navigation: Quiet operation and superior mobility over varied floor transitions.
– Smart App/Voice/Remote Control: Comprehensive control via Tuya Smart App, Alexa, or Google Assistant.
– Powerful 4000Pa Suction & Smart Cleaning Modes: Three customizable suction levels for versatile performance.

Pros:
– Highly accurate and efficient LiDAR mapping, perfect for multi-floor homes and guaranteed stair safety.
– Excellent suction power for thorough cleaning.
– Very quiet operation, especially in night mode.
– Extensive customization options for cleaning routes and forbidden zones.
– Seamless navigation over different floor types and thresholds.

Cons:
– No self-emptying station, requiring manual dustbin maintenance.

Best for: Users needing precise multi-floor mapping, powerful suction, and quiet operation with advanced stair avoidance, who don’t mind manually emptying the dustbin.

Expert Opinion: The D60S, with its advanced LiDAR mapping and robust obstacle avoidance, proves to be a highly dependable solution for navigating multi-level homes safely and efficiently. Its ability to create multiple maps is a significant advantage.

Helpful Comparison Insights

When looking for the best robot vacuum for stairs, it’s clear that navigation and obstacle avoidance are paramount. Models like the Bagotte BL20 Pro and the eufy E20 stand out with their advanced LiDAR mapping and laser obstacle avoidance, which translates to exceptional precision in detecting drops and creating virtual boundaries. This means less worry about your investment taking a tumble. The D60S models also offer excellent LiDAR mapping and multi-map saving, which is incredibly useful if you plan to move the robot between different floors.

For homes with pets, tangle-free designs are a huge benefit. The XIEBro Life and iMartine models, with their brushless suction ports, are excellent choices, as is the S2 which completely removes the central brush. This feature significantly reduces the time you spend untangling hair, making maintenance a breeze.

Suction power varies considerably. The Bagotte BL20 Pro boasts an impressive 5000Pa, while the D60S offers 4000Pa, and the eufy E20 is remarkable with 8000Pa in robot mode. If you have deep-pile carpets or a lot of heavy debris, these higher suction models will provide a more thorough clean. For hard floors and lighter debris, models like the UMMUND T7S (2000Pa) or iMartine (2300Pa) are perfectly adequate.

The convenience of self-emptying is a game-changer for reducing interaction. The iRobot Roomba Combo i5+ and the eufy E20 both offer this feature, allowing for weeks or even months of hands-free operation. While some models like the D60S provide excellent cleaning, they lack this feature, meaning you’ll need to empty the bin manually after each or every few runs.

Finally, the 2-in-1 vacuum and mop functionality is common across many of these robots. Models like the XIEBro Life, iRobot Roomba Combo i5+, and Bagotte BL20 Pro offer integrated mopping, providing a light wet clean for hard floors. Keep in mind that robot mops are generally for maintenance and light spills, not for tackling heavily soiled floors. For homes with multiple floor types, this dual functionality is a great way to consolidate your cleaning tools.

Final Verdict

Choosing the best robot vacuum for stairs truly boils down to your specific needs, budget, and how much hands-on interaction you’re willing to have.

• For the ultimate hands-off experience in a multi-level home, with superior navigation and self-emptying, the iRobot Roomba Combo i5+ and the eufy E20 are top contenders. They offer advanced mapping, robust obstacle avoidance (crucial for stairs), and minimal maintenance.
• If powerful suction and precise mapping are your priorities, especially for challenging debris or larger homes, the Bagotte Robot Vacuum and Mop (BL20 Pro) and the Robot Vacuum and Mop (D60S) are exceptional choices. Their LiDAR systems ensure methodical cleaning and reliable stair detection.
• For pet owners frustrated by tangled hair, the Robot Vacuum and Mop (S2) and iMartine Robot Vacuum and Mop Combo stand out with their tangle-free designs, while still offering solid stair avoidance and 2-in-1 cleaning.
• For those seeking a reliable and feature-rich option without breaking the bank, the XIEBro Life Robot Vacuum and Mop Combo and the UMMUND Robot Vacuum and Mop Combo offer good value with their 2-in-1 capabilities, smart control, and dependable sensor-based navigation that keeps them safe from drops.

Ultimately, the best choice ensures your home stays clean, your robot stays safe from stairs, and you get back your precious time.

Comprehensive FAQ Section

Q1: How do robot vacuums avoid falling down stairs?
A1: Most robot vacuums designed for multi-level homes use cliff sensors (infrared sensors) on their underside. These sensors emit infrared light and detect the absence of a surface. When the robot approaches a drop-off like stairs, the sensors don’t get a reflection back, signaling the robot to change direction and avoid the fall. More advanced models also use LiDAR or laser systems for enhanced mapping and obstacle detection, which further improves their ability to navigate around and prevent falls down stairs.

Q2: Can a robot vacuum clean multiple floors in a home?
A2: Yes, many robot vacuums are capable of cleaning multiple floors. However, they usually can’t autonomously travel between floors. You’ll need to manually move the robot to a different level. Some advanced models, like the D60S, feature multi-map saving, allowing them to store floor plans for different levels of your home, so they know where they are and how to clean efficiently once placed on a new floor.

Q3: Are all robot vacuums safe for use around stairs?
A3: While most modern robot vacuums come equipped with cliff sensors, the reliability can vary between brands and models. It’s always a good idea to check reviews and product specifications for specific mentions of “stair avoidance” or “cliff detection.” Brands known for strong navigation tend to have more robust stair safety features. Always supervise your robot vacuum during its first few runs, especially near stairs, to ensure it navigates them safely.

Q4: What features are most important in a robot vacuum for stairs?
A4: The most critical features for a robot vacuum for stairs include reliable cliff sensors/obstacle avoidance (LiDAR or laser are best), smart mapping (especially multi-map for different floors), and sufficient battery life to cover a given level. Features like self-emptying and strong suction are also valuable but secondary to safe navigation around drops.

Q5: Can robot vacuums be used on carpeted stairs?
A5: Robot vacuums are designed for flat surfaces and cannot climb or descend stairs. While they excel at cleaning carpeted floors, they won’t clean carpeted stairs. For stairs, you’ll still need a traditional stick vacuum or handheld vacuum. The “stair avoidance” feature ensures the robot vacuum doesn’t fall off the top of the stairs, not that it cleans them.

Q6: Do robot vacuums with mopping functions also avoid stairs effectively?
A6: Yes, the mopping function generally doesn’t interfere with the robot’s ability to avoid stairs. The cliff sensors operate independently of the cleaning mode. A 2-in-1 robot vacuum for stairs will still use its sensors to detect drops, whether it’s vacuuming, mopping, or doing both.