Thanks for the advice everyone. We went through today with no new sprays. All cats seem really interested in the Feliway plug in. A couple of times I saw Ripley checking out that area I picked him up and carried him to his litter box and he would immediately pee. It seems like this is helping.

I will try rubbing something of his around to see if that helps and I'll get the Feliway spray too. I've cleaned the spot extremely well with Natures Miracle and I can no longer smell the urine but I'm going to treat it again to make extra sure.

I will also keep in mind to use the plug in before I make any kind of new changes.

If I have to resort to retraining him I will be needing more advice from Jen.

Thanks again.