How to Clean Pool Cleaner Rubber Treads for Better Climbing

Why rubber treads are key to wall climbing

Robotic pool cleaners climb walls by pulling water through their suction system and using rubber treads to grip the surface. The treads, usually made of silicone or a similar elastomer, need maximum contact with the wall to prevent the cleaner from sliding down. Manufacturers like Aiper and Maytronics promote models that can climb and scrub pool walls, but all of them rely on that rubber-to-surface contact.

Algae and dead organic matter create a slippery film on pool surfaces, and the same film builds up on the treads themselves. Grit and sand can become embedded in the tread pattern, reducing the effective contact area. This is why a cleaner that worked well at the start of the season may suddenly lose its grip. A simple cleaning routine solves most traction issues.

For more background on what makes a cleaner climb, see how wall-climbing angle works and the best wall-climbing pool cleaners.

Signs your treads need cleaning

Watch for these clues that your treads have lost traction:

• The cleaner takes a longer path up the wall or zigzags instead of going straight.
• It leaves a visible gap between the wall and the tread when viewed through the water.
• You see small patches of algae or slippery film on the rubber after the cleaner is removed.
• The cleaner stops temporarily on a steep sloped section and then slides back down.
• Grit or sand remains stuck in the tread grooves after a normal rinse.

Step-by-step tread cleaning

Follow this process every time you notice a drop in climbing performance. Always unplug the cleaner and carry it to a flat area away from the pool.

1. Rinse the entire body, especially the treads, with a garden hose to remove loose debris.

2. Fill a bucket with warm water and add a few drops of mild dish soap. Do not use bleach, acetone, or any petroleum-based solvent, as these can damage the rubber.

3. Scrub the treads with a soft-bristled brush, working into the grooves in a circular motion. A toothbrush works well for narrow patterns.

4. Rinse again with clean water to remove all soap residue.

5. Let the cleaner air-dry completely before storing or returning it to the pool.

Do not submerge the cleaner's motor housing or electronic parts in water. Only the treads and lower chassis should be scrubbed.

For cleaners with removable treads, check the manufacturer’s manual. Some are held by clips or screws; others are glued. Removing them makes cleaning easier but is not required for most maintenance.

If the treads still look slippery after cleaning, repeat the soap scrub, focusing on the areas that contact the wall most often. Persistent film may require a second scrub with a slightly firmer brush, but avoid anything that could scratch the rubber surface.

Preventing buildup between cleanings

The best way to keep treads clean is to stop algae and grit from sticking in the first place. After every cleaning cycle, lift the cleaner out and give the treads a quick rinse with fresh water. This removes microfilm that can harden if left to dry.

Pool water chemistry also plays a role. The World Health Organization's guidelines for safe recreational water environments emphasize proper disinfection and hygiene to control microbial growth, including the algae that makes surfaces slippery. Keeping your pool well-balanced reduces the frequency of heavy tread buildup. The Pool & Hot Tub Alliance (PHTA) publishes standards that help pool operators and homeowners maintain healthy water.

Also clean the cleaner's filter and brushes regularly, because a clogged filter reduces suction, which in turn can cause the cleaner to lose grip even with clean treads. See filter cleaning frequency and how to clean the filter bag.

When cleaning is not enough

If you have cleaned the treads and the cleaner still slides down walls, inspect the rubber for wear. Look for cracks, flat spots, or grooves that have become smooth and shiny. Worn treads have much less grip even when perfectly clean.

Replacement treads are specific to each cleaner model. Check the manufacturer’s documentation for the part number and installation procedure. Some models have treads that are easy to swap; others require a service technician. See our guide on silicone vs. rubber treads for wall climbing and the general tread wear troubleshooting.

If the treads are fine but the cleaner still has trouble climbing, the issue may be a weak motor, a worn drive belt, or low suction. Read our troubleshooting guide for a broader diagnosis.

Safety and source notes

Always follow the manufacturer’s instructions when servicing any part of your cleaner. For warranty coverage, check your model's terms. Many warranties require regular maintenance, but replacing treads yourself could void the warranty if not done correctly. Read our pool cleaner warranty terms for what to watch.

The cleaning steps described above are general advice and are not based on laboratory testing. Always verify with your specific cleaner's manual before attempting any repair.

What to pick for your use

Questions

Can I use bleach to clean pool cleaner treads?

No. Bleach can degrade the rubber, cause cracking, and reduce traction. Use mild dish soap and warm water instead.

How often should I clean the treads?

You should rinse the treads after every cleaning cycle and do a deeper soap scrub whenever you notice a loss of climbing performance, or at least once a month during the swimming season.

Do I need to remove the treads to clean them?

No. You can clean them while attached to the cleaner as long as you avoid getting water into the motor housing. If you do remove them, follow the manufacturer’s instructions.

What brush should I use?

A soft-bristled brush, such as a dish brush or an old toothbrush, is ideal. Avoid metal brushes that could scratch the rubber.

My cleaner still won't climb after cleaning. What else could be wrong?

Check the filter for clogs, the drive belts for wear, and the wheels or tracks for damage. If all looks fine, the suction motor may need servicing. See our troubleshooting guide for details.