BISSELL Little Green HydroSteam Portable Carpet Cleaner(3618) Review Carpet Cleaner Reviews, August 14, 2026August 14, 2026 Maintaining clean carpets, upholstery, and various surfaces can be a challenge, especially in homes with pets or heavy foot traffic. The BISSELL Little Green HydroSteam Portable Carpet Cleaner, model 3618, is designed to address these everyday messes while prioritizing ease of use and versatility. In this review, we examine the Little Green HydroSteam’s core features, real-world performance, strengths, weaknesses, and customer experiences to help you make an informed decision. CHECK PRICE ON AMAZON BISSELL Little Green HydroSteam Key Features and Specifications FeatureSpecification/DetailBrandBissellColorBlack and Copper HarborItem Weight13 poundsProduct Dimensions15.5″D x 12.5″W x 14.5″HStyleLittle Green HydroSteamCleaning TechnologyHydroSteam (combines steam, suction, and OXY formula)Cleaning Modes3 modes: SteamWash, Steam, WashFast DryingDries upholstery in about 30 minutesMulti-Surface CapabilityCarpets, upholstery, stairs, auto interiors, tile, grout, sneakersTank CapacityDual-tank system, 64 oz. clean tankIncluded Tools5” Tough Stain Tool, Multi-Surface ToolFormula IncludedPET PRO OXY Spot & Stain Urine Eliminator with StainProtectStain RemovalDesigned for permanent stain removal and prevention of future stainsAccessoriesBISSELL PET PRO OXY formula, toolsWarranty3-year limited warrantyWeight CapacityPortable, easy for one person to handlePet SupportProceeds support BISSELL Pet FoundationCustomer FeedbackEffective cleaning, easy water tank use, mixed steam/suction, durability concerns CHECK PRICE ON AMAZON BISSELL Little Green HydroSteam Performance HydroSteam Technology and Cleaning Power The standout feature of the BISSELL Little Green HydroSteam is its use of HydroSteam Technology. This combines three elements—steam, powerful suction, and a specialized OXY cleaning formula—to target and eliminate tough stains. Set-in and oily messes, often caused by pets or heavy use, are the focus. The intense steam helps to loosen hardened grime, the suction lifts and removes both debris and moisture, and the OXY formula penetrates to break down stains at their core. Many users report high satisfaction with the cleaning performance, calling out its effectiveness on small messes, pet stains, and grime embedded in carpet and upholstery. The addition of steam accelerates stain breakdown, setting this model apart from older or more basic portable carpet cleaners. Customers find that it often exceeds expectations, especially for recent stains and high-traffic problem areas. Three Cleaning Modes for Versatility The Little Green HydroSteam offers three targeted cleaning modes: SteamWash: Intended for the most stubborn, oily, or deeply embedded messes. Steam helps release stuck-on debris while simultaneous suction and formula work together for a thorough clean. Steam: Used for refreshing soft furnishings and cleaning hard surfaces like tile and grout. Effective on upholstery and non-porous surfaces, this mode offers a safe way to sanitize without using harsh chemicals. Wash: Utilizes the enzyme-based PET PRO OXY formula, ideal for pet accidents and organic stains. This mode maximizes the power of the included formula and strong suction, reducing lingering odors and helping to prevent re-soiling. This multi-mode design ensures the machine can adapt to various messes, not just on carpets but also on stairs, auto interiors, and hard surfaces. Users appreciate being able to switch modes for different surfaces and cleaning challenges within one deep-cleaning session. Drying Time and Usability A noteworthy benefit often highlighted is the fast drying time. Upholstery is reported to dry in as little as 30 minutes in many cases. This quick-dry feature is crucial for busy households, minimizing downtime after accidental spills or routine cleaning. It also means less risk of over-wetting, which can sometimes lead to mold or mildew issues in traditional cleaning methods. The water tanks—one for clean water and one for dirty—are large (64 oz. clean tank capacity) and easy to fill, remove, and empty. Customers repeatedly describe the tank system as intuitive, making setup and maintenance straightforward. The dual-tank design ensures that clean and dirty water never mix, maintaining cleaning efficacy. Multi-Surface Tools and Included Formula The Little Green HydroSteam is compatible with multiple surfaces, thanks to the included attachments: 5” Tough Stain Tool: Focused scrubbing power for carpets, upholstery, and auto interiors. It’s small enough to target localized grime while delivering both steam and formula. Multi-Surface Tool: Unlocks the ability to clean tile, grout, and even sneakers. This expands the unit’s usefulness throughout the home. BISSELL PET PRO OXY Spot & Stain Urine Eliminator with StainProtect: This is BISSELL’s premium portable formula, provided in the box for maximum stain and odor removal. It is designed for pet owners but works broadly for a range of persistent stains. These tools allow targeted treatment and contribute to the versatility and value of the machine. The combination of accessories and formulas maximizes the machine’s cleaning potential right out of the box. Permanence of Stain Removal A distinctive promise from BISSELL is permanent stain removal when using the included PET PRO OXY formula and the HydroSteam system. The cleaner does not just mask marks; it aims to dissolve, lift, and prevent future stains. The formula’s StainProtect technology is formulated to help prevent stains from reoccurring, which is essential for households with pets, kids, or high-traffic living spaces. Maneuverability and Portability At 13 pounds, the Little Green HydroSteam is heavier than the lightest spot cleaners on the market but remains portable enough for most users to carry around. Its modest footprint—15.5″ deep, 12.5″ wide, and 14.5″ high—ensures it can be stored in a closet, under a sink, or in a car boot for travel. The ergonomic handle and reasonably balanced weight distribution mean it can be moved from room to room, up stairs, or out to vehicles without excessive strain. Ease of Use and Maintenance Customers regularly mention how easy the machine is to set up, operate, and clean afterwards. The tanks lift out smoothly, filling and emptying are straightforward, and the large openings prevent accidental spills. The attachments are easy to swap, and the compact build ensures the tools and cord wrap neatly for storage. The clear assembly and maintenance paths lower the learning curve, making this a strong choice for users at any experience level. The design’s user-friendliness makes it well suited for spot cleaning small messes and routine maintenance. For those who want to avoid calling in professional cleaners for every little accident or disaster, the BISSELL delivers convenient DIY solutions. Steam and Suction Performance—Mixed User Feedback While cleaning power is generally praised, customer feedback on the HydroSteam mode and suction strength is mixed. Many users love the combination of hot steam and deep suction, describing it as “intense” and impactful for the worst stains. However, there are reports of some units experiencing issues with the steam function not working as expected, or with suction that appears weak, leaving carpets wetter than optimal or unable to lift debris efficiently. This inconsistency may indicate that quality control could be improved for a more seamless user experience. Build Quality and Durability Durability is an area of concern based on customer reviews. Multiple users report that their unit stopped working within six months of purchase, often citing loss of steam function or suction, or mechanical failure. While the three-year limited warranty offers some reassurance, the track record raises questions about long-term reliability. For consumers seeking a device that will last several years under regular use, these durability issues may be a hesitation point. Customer Experience and Social Good One unique aspect of BISSELL’s branding is its support of the BISSELL Pet Foundation. Every purchase of the Little Green HydroSteam supports efforts to save homeless pets, which adds a layer of goodwill to the buying decision, especially attractive to animal lovers. CHECK PRICE ON AMAZON BISSELL Little Green HydroSteam Pros and Cons ProsConsExcellent cleaning power and permanent stain removalDurability concerns (reported failures at 6 months)Three cleaning modes for different messes and surfacesSteam function and suction performance varyQuick drying keeps furniture and fabrics usable fasterEasy to use, intuitive tank design and included toolsMulti-surface versatility for whole-home cleaning FAQ About BISSELL Little Green HydroSteam Portable Carpet Cleaner How effective is the cleaning power on set-in stains? The HydroSteam technology, combined with the PET PRO OXY formula, is designed to remove both fresh and set-in stains, including oily, stubborn, or pet-based messes. Most users find it highly effective for spot cleaning, with many stains eliminated permanently. What types of surfaces can the machine clean? It can be used on carpets, upholstery, stairs, auto interiors, tile, grout, and even sneakers. The multi-surface tools included enable cleaning on both soft and hard materials. How many cleaning modes does it have, and what are they for? There are three modes: SteamWash (for tough and oily messes), Steam (for upholstery refreshing or hard surfaces), and Wash (for enzyme-based stains, especially pet messes). Does the unit dry fabrics quickly? Yes. In many cases, upholstery can be dry in about 30 minutes. This is much faster than traditional extraction methods and allows for quick turnaround of cleaned spaces. How easy is it to fill and empty the tanks? The dual-tank system is designed for easy removal, filling, and emptying. The clear and wide openings help prevent spills and make cleaning simple. Is the machine suitable for whole-house or large room cleaning? It is best suited for spot cleaning: small messes, stairs, car interiors, or a few heavily trafficked areas. It is not intended for cleaning entire rooms or extensive carpeted areas. What should I know about durability? Some customers report their unit stopped functioning within six months. Issues most commonly involve loss of suction or steam failure. The product has a three-year limited warranty, but long-term reliability may be inconsistent. Are the steam and suction powerful? Many users praise the strength of both features, though there are a notable number of complaints about inconsistent or failing steam and suction functions in some units. Can I use it for pet stains? Yes, it is especially well designed for pet messes, using a formula that eliminates odors and discourages re-soiling. What comes in the box? You receive the Little Green HydroSteam machine, a 5″ Tough Stain Tool, Multi-Surface Tool, one bottle of BISSELL PET PRO OXY Spot & Stain Urine Eliminator with StainProtect, and a 3-year limited warranty. Check out our other carpet cleaner and vacuum reviews below. 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