I recently received my 1st order from petlab. I live in a unit so I have a fake grass puppy toilet on the balcony and it didn't matter what I washed it with it always had an unpleasant smell. Now that I have petlab products: I gave the fake grass mat a good wash with a sponge and tap water just using the shower hose, I towel dried it using a microfibre cloth, then sprayed it liberally with the E.N. zyme stain and odour remover and left it to dry naturally (about 5 hours on a nice warm day) and finally a spray with healthy habitat pet-safe disinfectant cleaner and leave that to dry naturally (another hour or so). NO MORE SMELLY GRASS MAT! It really works - so glad I decided to try it.