L.C.
do not use Clorox on concrete!!! Vinegar should do the trick wipe the wall and the base board with it. Normally you would mix half and half but I wouldnt dilute it. Pour some on a rag and wipe it down You may even go as far as to use some touch up paint on the baseboards one it can act as a stain blocker and two prevent the smell, so your cat doesnt become territorial and spray over the tom cats. I would pick up the food not only from the cats but other creepy crawlys such as roaches. I know vinegar isnt really refreshing but it is a neautralizer.