The neighbors cat has decided to use our front bushes for her litter box! Now everytime I open my windows it smells like a cat urinated all over my living room. I tried a powder form of septic system digester and that did not work. I love to have my windows open but the smell is extremely over powering, worse when the mulch gets wet from the rain. What can I do to get rid of the smell?? I have not seen the cat in a while so I don't think its urinating in my front beds anymore.