Introduction
The BISSELL Little Green Pet Pro Portable Carpet Cleaner is designed for powerful spot and stain removal on carpets, upholstery, and auto interiors. Its strong suction and specialized tools make it ideal for tackling tough messes, especially those caused by pets. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your cleaner to ensure optimal performance and longevity.

Image: The BISSELL Little Green Pet Pro Portable Carpet Cleaner, showcasing the main unit, hose, cleaning tool, and a bottle of cleaning formula. This compact design allows for easy portability and storage.
Setup
Before first use, ensure all components are present and properly assembled.
- Unpack Components: Carefully remove the cleaner and all accessories from the packaging. Verify you have the main unit, hose with attached cleaning tool, Self-Cleaning Tough Stain Tool, Pet Hair Removal Tool, and Crevice Tool.
- Fill Clean Water Tank: Locate the clean water tank (usually marked "MAX" or with a fill line for water and formula). Remove the tank from the unit. Unscrew the cap and fill with hot tap water up to the water fill line. Add BISSELL PET PRO OXY Spot and Stain formula up to the formula fill line. Securely replace the cap and reinsert the tank into the unit.
- Attach Cleaning Tool: Connect the desired cleaning tool (e.g., Tough Stain Tool) to the end of the hose until it clicks securely into place.
- Power Connection: Unwind the power cord and plug the cleaner into a grounded electrical outlet.
Operating Instructions
Follow these steps for effective cleaning on various surfaces.
General Cleaning Steps:
- Pre-Treat (Optional): For heavily soiled areas, pre-treat the stain with BISSELL PET PRO OXY Spot and Stain formula. Allow it to sit for a few minutes before cleaning.
- Spray Solution: Hold the cleaning tool about one inch above the soiled surface. Press the spray trigger to apply cleaning solution.
- Scrub and Suction: While continuing to press the spray trigger, slowly move the tool back and forth over the soiled area. Release the trigger and slowly move the tool over the same area to suction up the dirty solution. Repeat until the area is clean and no more dirty solution is being picked up.
- Rinse (Optional): For best results, fill the clean water tank with only hot tap water (no formula) and repeat the suction step to rinse the area.
- Drying: Allow the cleaned area to dry completely before walking on it or placing furniture back.
Specialized Cleaning Applications:
- Carpet & Area Rugs: Use the Tough Stain Tool for general carpet cleaning. For pet messes, the Self-Cleaning Tough Stain Tool helps remove embedded dirt and hair.
- Upholstery: Always check the fabric care tag before cleaning. Use the Tough Stain Tool or Pet Hair Removal Tool. Do not over-wet upholstery.
- Auto Interiors: The Crevice Tool is ideal for tight spaces and corners in car interiors. The Pet Hair Removal Tool is effective for removing pet hair from car seats and floor mats.
- Pet Beds: The Pet Hair Removal Tool is specifically designed to lift pet hair and clean pet beds effectively.

Image: A person using the cleaning tool to remove colorful stains from a white fabric chair. The strong suction of the Little Green Pet Pro ensures effective stain removal.

Image: The cleaner being used to remove dirt and debris from a car seat, demonstrating its versatility for auto detailing.

Image: The specialized pet tool effectively cleaning a pet bed, highlighting its ability to remove pet hair and messes.
Maintenance
Regular maintenance ensures your cleaner remains in optimal working condition.
- Empty and Rinse Dirty Water Tank: After each use, remove the dirty water tank. Open the lid and pour out the dirty water. Rinse the tank thoroughly with clean water. Allow it to air dry before reassembling.
- Rinse Clean Water Tank: If any cleaning solution remains in the clean water tank, empty it and rinse thoroughly.
- Clean Tools: Remove any hair or debris from the cleaning tools. Rinse them under running water. The Self-Cleaning Tough Stain Tool can be cleaned by attaching it to the hose and spraying clean water through it into a sink.
- Wipe Down Unit: Wipe the exterior of the cleaner with a soft cloth.
- Store Properly: Store the cleaner in a dry, protected area. Wrap the hose and power cord neatly around the designated storage areas on the unit.

Image: The dirty water tank filled with discolored water, illustrating the effectiveness of the cleaner in extracting grime from surfaces.

Image: A person pouring BISSELL PET PRO OXY Spot and Stain formula into the clean water tank, demonstrating the ease of refilling.
Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Cleaner not turning on | Not plugged in; Blown fuse/tripped breaker | Ensure plug is firmly in outlet; Check/reset fuse or breaker |
| No spray | Clean water tank empty; Tank not seated properly; Clogged spray nozzle | Refill tank; Re-seat tank firmly; Clean spray nozzle |
| Reduced suction | Dirty water tank full; Tank not seated properly; Clogged hose/tool | Empty dirty water tank; Re-seat tank firmly; Clear any blockages |
| Cleaner leaking | Tank caps not secure; Tank not seated properly | Ensure tank caps are tightly closed; Re-seat tanks firmly |
Specifications
| Brand: | Bissell |
| Model Name: | Little Green Pro |
| Item Model Number: | 3909 |
| Power Source: | Corded |
| Item Weight: | 13.17 pounds |
| Package Dimensions: | 16.8 x 15.9 x 12.2 inches |
| Included Components: | Main unit, Self-Cleaning Tough Stain Tool, Pet Hair Removal Tool, Crevice Tool, Trial-sized PET PRO OXY Spot & Stain formula (8 oz) |
Safety Information
- Always follow basic precautions, including the following:
- Read all instructions before using your portable spot cleaner.
- Do not immerse. Use only on surfaces moistened by the cleaning process.
- Use only BISSELL cleaning formulas intended for this machine.
- Unplug from outlet when not in use and before servicing.
- Do not allow to be used as a toy. Close attention is necessary when used by or near children.
- Do not use with damaged cord or plug.
- Do not pull or carry by cord, use cord as a handle, close a door on cord, or pull cord around sharp edges or corners.
- Keep hair, loose clothing, fingers, and all parts of body away from openings and moving parts.
Warranty & Support
This product comes with a manufacturer's warranty. For detailed warranty information, product registration, or technical support, please visit the official Bissell website or contact their customer service. Keep your purchase receipt as proof of purchase.

Image: A rescued dog sitting on a clean carpet, accompanied by the message "Every Purchase Saves Pets", highlighting BISSELL's support for the BISSELL Pet Foundation.