Hey there Terry!

I can guarantee that the cayenne pepper and fox urine works! I've used both with great success to discourage not only the neighbor's cat, but the neighborhood skunks, squirrels, gophers and other assorted varmints.

Both the pepper and the fox urine are relatively cheap kitty cures. It really depends on how much time and money you want to spend on the problem. If you have another spot in the yard -- far enough away from your garden -- you could plant some catnip just for the kitties. Besides keeping them away from your flowers, it will serve to calm their little fuzzy bums down.

Good luck to you and your garden, Áine