Yeah that was what I used last. Someone suggested using that spray with a magic eraser so I'll try that the next time. It's only this difficult when DH is wearing sunscreen to work all the time. I'm assuming it's the sweat resistance that does it. It had me thinking of my mom's big canisters of Ajax. I think it's not supposed to be good for every surface; but I don't remember ever having trouble keeping the bathroom clean at home growing up!Have you tried Dow Scrubbing Bubbles? This spray foam usually works wonders on tubs and showers.