Dark spots on side of bath tub - anyone got any experience with this?
What about it?
Any one had experience with this before? Side of the bathtub has a plastic shelving bit which we've put shampoo bottles, shower gel etc. Its created these dark spots which I've never seen before and struggling to remove - tried bleach, steel wool, bicarbonate+vinegar, mould remover. Think its some form of plastic on plastic reaction but wanted to see if anyone else has had experience with this before.