Can anyone recommend a cleaning product that actually works please?! I've tried all sorts and he still goes back to pee in the same place so he must be able to smell it still even though we can't. We've pulled that area of carpet up and cleaned the tiles and concrete underneath because we're due to have wooden floors fitted soon and I wanted to make sure it was fully dry first. We've even ripped the shifting boards off! I'm so worried he's going to pee on the new flooring!