I use a product called Get Serious, a little goes a long way (Petsmart) - it claims to remove urine from the pad and down to the cement. I have been really happy with its performance for new stains and old stains. It does leave an odor at first (better than the urine smell), but after 3 or 4 days you can't smell a thing. It doesn't just "bleach" the stain or cover up the odor, it actually removes the urine (by blotting with a towel). |