There are several sites that suggest using coffee grounds in the garden, to keep out cats. I haven't tried it, but there are some beds on my property which could do without cats digging around and occasionally attacking plants (beats me why they do that). I guess the best way to find out is to try it myself, but before I go around sprinkling coffee grounds on the beds, does anyone here know:
Are coffee grounds really effective at deterring cats from living in garden beds?