Avoid abrasive chemical cleaners. Some of these you can wipe away with no more than a damp cloth if caught right away, but over time they do build up. Acrylic looks similar to plastic. When cleaning an acrylic bathtub, stay away from harsh astringent powders such as Comet and Ajax, as well as harsh chemicals like bleach. They clean the discoloration from your tub, and freshen up the drain when you rinse them away.These cleaning methods are intended for enamel and porcelain tubs. Then rinse and wipe.

"Used a number of products which only partly removed brown stain on acrylic bath. If this doesn’t work or you don’t want to use it, find out whether it’s possible to get a new coat on your bathtub in place of having to install a new tub, if the cost is reasonable; call a plumber or a bathroom supplies store for advice. Rinse the tub with clean water before use.Mix together equal parts baking soda and cream of tartar.Add enough lemon juice to the dry mixture to make a thick paste.Apply the paste to the rust stains with your fingers or a clean cloth, and let the paste work on the stain for about 30 minutes.Rinse the paste away with warm water and the rust should go with it. Spread the paste over any stained areas of the bath. wikiHow is where trusted research and expert knowledge come together. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/0f\/Clean-Tough-Stains-from-a-Bathtub-Step-1-Version-3.jpg\/v4-460px-Clean-Tough-Stains-from-a-Bathtub-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/0\/0f\/Clean-Tough-Stains-from-a-Bathtub-Step-1-Version-3.jpg\/aid425568-v4-728px-Clean-Tough-Stains-from-a-Bathtub-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"