I purchased this product for our bathroom and shower grouts fortunately we don’t get a lot of mould in the grout but sometimes in the winter we get some. After reading your ad I thought I would use your product sprayed it on the area that needed mould removed for 1 1/2 days. To my disappointment the mould was the same nothing had moved after trying to clean it didn’t work so ended up having to use bleach again expensive exercise as so tried to order 1 ended up with 2 so with postage an expensive exercise. The product obviously hasn’t been tested properly so it is false advertising.