Some of our customers have asked us if they need to do anything differently to clean a walk-in bath than they would to clean a normal tub. For the most part, there aren't many differences. One thing to keep in mind, though, is that our walk-in baths have door seals that are designed to seal water-tight and prevent any seepage from flooding your bathroom or damaging your flooring. For that reason, you'll want to avoid extremely abrasive chemicals and cleaning surfaces.
Stains and build-ups of deposits and sediment occur naturally over time with use of a walk-in bath. Just wiping the tub out two to three times a week will help to counteract water spotting and soap scum. It's also a good idea to keep one towel in your bathroom that you only use for wiping out the tub after use. Mold and mildew thrive on moisture, and evaporating water leaves mineral deposits that may cause discoloration; this simple step can save you a lot of trouble down the road. This is recommended over using an anti-mildew spray, which can damage the door seal and may also make the surface of the tub hazardously slick.
A soft brush or plastic scrub tool is recommended for cleaning a walk-in bath, because these typically will not scratch or dull the surface. For tough spots and stains, soak them in a specialized bathroom surface cleaner prior to scrubbing. Try not to use any cleaners on the door seal if you can avoid it (if you really need something to get a tough stain off the seal, use regular dish soap), and gently towel-dry the seal to keep it from becoming misshapen or waterlogged, which can affect the integrity of the seal.