Free Guide to Cleaning Your Little Green Machine

What Is the Little Green Machine and Why It Needs Regular Cleaning

The Little Green Machine is a compact, portable carpet and upholstery cleaning device manufactured by Bissell. Unlike full-size carpet cleaners that stay in one place, this machine weighs around 5 pounds and features a handheld design, making it useful for cleaning stairs, furniture, car interiors, and small spills throughout your home. The device uses a combination of hot water, cleaning solution, and suction to remove dirt, stains, and debris from fabric surfaces.

Regular cleaning of your Little Green Machine is essential for maintaining its performance and extending its lifespan. When you use the device, dirt, debris, and cleaning solution residue accumulate in various parts of the machine. Over time, this buildup can reduce suction power, clog internal pathways, and create an environment where bacteria and mold can grow. Many users notice that their machines lose effectiveness within weeks or months if they don't perform maintenance between uses.

The machine contains several key components that require attention: the clean water tank, dirty water tank, hose, brush head, spray nozzles, and filter. Each part plays a role in how well the machine functions. When any of these areas become clogged or contaminated, the entire cleaning process becomes less effective. For example, a blocked nozzle means the cleaning solution won't spray properly, and a full dirty water tank can't collect more moisture from your carpets.

Manufacturers recommend cleaning your Little Green Machine after each use, though many people perform deeper maintenance weekly or monthly depending on usage frequency. This guide provides information about the various cleaning methods and maintenance steps you can take to keep your machine working properly.

Practical Takeaway: Set a routine to clean your machine after every use. This prevents buildup and keeps your device working at peak performance for future cleaning tasks.

Emptying and Rinsing the Water Tanks

The first and most important step in cleaning your Little Green Machine is emptying both water tanks. Your machine has two separate tanks: the clean water tank (which holds the water and cleaning solution mixture) and the dirty water tank (which collects water extracted from your carpets and furniture). Both tanks must be emptied regularly to prevent overflow and maintain hygiene.

To empty the clean water tank, locate it on the side or back of your machine—consult your specific model's manual to find the exact position. Most tanks feature a release button or lever that you press to detach the tank from the main unit. Carefully pour out any remaining water and solution into a sink or drain. Never pour the water back into your carpet or furniture, as it contains dirt and debris that was extracted during cleaning.

For the dirty water tank, the process is similar but requires extra caution since it contains contaminated water. Remove the tank using the release mechanism, then pour the water down a toilet or drain in a sink. Do not pour dirty water directly into a bathtub where people bathe. Depending on how much cleaning you've done, this tank may feel quite heavy. Empty it even if it doesn't look completely full, as standing water can develop odors and harbor bacteria within hours.

After emptying, rinse both tanks thoroughly with clean water. Use your fingers or a soft cloth to wipe the interior surfaces, paying special attention to corners and edges where debris tends to collect. For stubborn residue, fill the tank partially with warm water and let it soak for a few minutes before scrubbing. Many users report that rinsing tanks weekly with a mixture of equal parts white vinegar and water helps prevent mold growth and odor issues. Make sure both tanks are completely dry before reattaching them to the machine.

Practical Takeaway: Empty both tanks after every cleaning session and rinse them with clean water. Store them in an upright position so they dry completely before your next use.

Cleaning the Brush Head and Spray Nozzles

The brush head is one of the most hardworking parts of your Little Green Machine. This rotating brush agitates fibers in your carpet or upholstery to loosen dirt before the machine's suction pulls debris away. Over time, dirt, hair, and fiber buildup wrap around the brush bristles and reduce their effectiveness. Additionally, cleaning solution can dry on the brush and nozzles, creating crusty buildup that interferes with spray patterns.

To clean the brush head, first detach it from the machine according to your model's instructions. Most brush heads simply twist or snap off. Hold the brush under warm running water and use an old toothbrush or soft-bristled brush to remove visible debris. Pay special attention to the spaces between bristles where hair and dirt accumulate most. If buildup is heavy, soak the brush head in a container of warm water with a few drops of dish soap for 15 to 20 minutes, then scrub again.

Inspect the spray nozzles carefully, as these small openings can easily become clogged. The spray nozzles are typically small holes located on the bottom or front of the cleaning head where cleaning solution exits during use. Clogged nozzles result in uneven spray patterns, which means some areas of your carpet receive cleaning solution while others don't. Use a thin item like a straightened paperclip or a fine needle to carefully poke through each nozzle opening to clear any blockages. Work gently to avoid enlarging or damaging the nozzles.

After clearing nozzles, run water through them to verify they're working properly. You should see even streams of water coming from each opening. If any nozzles remain clogged after poking, try soaking the brush head in equal parts white vinegar and water for 30 minutes—the vinegar can dissolve mineral deposits that hard water leaves behind. Shake off excess water and allow the brush head to air dry completely before reattaching it to your machine.

Practical Takeaway: Clean your brush head and check nozzles after each use. Keep a paperclip or small tool nearby specifically for clearing nozzle blockages to maintain consistent spray patterns.

Unclogging and Maintaining the Hose

Your Little Green Machine uses a hose to transport cleaning solution from the clean water tank to the brush head and to carry dirty water and air back toward the collection tank. Over time, the hose can develop clogs from debris, dried cleaning solution, and mineral buildup. A clogged hose reduces water flow, weakens spray patterns, and may cause water to back up into the machine's internal components.

To check for hose clogs, disconnect the hose from both the main machine and the brush head. Hold the hose up to a light source and look through it—you should be able to see through the entire length. If you can't see light on the other end, a clog likely exists. Fill a bathtub or large container with warm water and submerge the entire hose. Let it soak for 30 minutes to help loosen any buildup. Then hold one end over a sink and flush clean water through from the other end. Repeat this process until water flows freely.

For stubborn clogs, you may need to use a hose cleaning tool or straightened wire coat hanger to carefully push the obstruction through. Feed the wire slowly into the hose from one end, working it through gently to avoid puncturing the hose material. Once you feel resistance lessen, run water through again to flush out the dislodged debris. Some users report success using a plumbing snake for particularly tough blockages, though you should work carefully to avoid damaging the hose interior.

To prevent future clogs, rinse the hose with clean water after every cleaning session. This removes leftover dirt and cleaning solution before they dry and harden. Additionally, never store your hose bent sharply or kinked, as this can trap water and create ideal conditions for mold growth and mineral deposit formation. Instead, coil the hose loosely or hang it straight on a wall. Store your machine and hose in a cool, dry location away from direct sunlight, which can degrade hose material over time.

Practical Takeaway: Rinse your hose thoroughly after each use and inspect it monthly by holding it to light. Store it coiled loosely to prevent water trapping and mold development.

Replacing and Cleaning Filters

Your Little Green Machine contains at least one filter (some models have multiple) that traps particles and prevents dirt from entering the