It seems like we have a serious alley cat problem in my neighborhood. I've seen at least 7 different cats near the alleyway, and there's always one or two roaming around inside my yard every now and then. I already found stinky cat poop beside my pepper plants! We have a fence but there's easy access on all the other sides where we're planning to put more fence up.

My garden consist mainly of herbs, which is why I am so picky. While, I'm sure there may be other pests esp now in the summer..I am more concern with the cats/squirrels. Any ideas to keep them away or should I just protect my plants with screens?