Erase the Invisible Sign

To your nose, a normal cleaner makes the spot smell fine. To your dog, it still screams "toilet here."

Enzymatic cleaners are the fix. They don't cover the smell; they digest the proteins until the message is truly gone.

Soak the spot — the cleaner has to reach as deep as the pee did, which means saturating the carpet pad underneath. Let it sit for the full contact time on the label. A quick wipe leaves partial scent, and partial scent invites a repeat.