hi sprustotty,
I've got an old cat,19 years, and I have recently got married and moved home. We did all we could to keep 'Beau Geste' calm. He settled in the new house very well indeed, but outside, which prior too moving was his fave place at night, was a different matter. We seem to be in a cat metropolis, with hunky-chunky cats all around. Beau Geste decided that he wasn't going to mix with these cats and started to treat various places in my new home as a toilet. Hmmm, not very nice. We have bought him an indoor toilet, so that he doesn't have to fight for a certain spot, can you see him smiling? I hope that if I get to his relative age, then someone will attend to me in such a sensitive way. So no I don't think they forget as such, they just get tired. I've also discovered that white vinegar will erradicate any urine odour, but watch your fabrics for any reaction to this acid.