I've uses Poorboys Trim Restorer with great results. It lasts for about 1 month where I live. I recently tried gtechniq c4 and it has been holding out for 3 months so far. You could buy 3 bottles of PB for 1 bottle of c4. It all depends on how often you want to detail your trim.
I live on the North Shore and have to deal with the salt spray & the sun.I used Menzerna Power Finish w/ a LC orange pad on my PC and had excellent results. The abrasives break down the longer you work it into the paint. It finishes really smooth and glossy.
I keep cats off of my car by putting vented containers of amonia around my car. I use old plastic dairy containers and punch holes in the lid to vent the amonia.