Our garage door reeks of cat pee to the extent that the smell is permeating the house. We have a spayed female who chose to move outdoors when we moved house last year, and she has a catflap into the garage where she has a cat igloo and is where we feed her (she comes in when she's cold, but otherwise basically lives in the garden and garage).
We're guessing the spraying is one of the toms who regarded the garden as their own, before our cat arrived.
We've washed the door and disinfected, is there anything else we could do? Any tips very much welcomed!