Works for me!
I purchased Nature's Mace Cat repellent because I have a dog who will hurt cats if she can reach them.  Was having a lot of stray cats coming into her dog run/pen area and were quickly dispatched by Daisy.  I don't want her injuring other little critters.  I sprinkled the Cat Mace around the outside of her area.  I was surprised at how well it works.  Cut the cat traffic down in no time.  I refreshed it every few days, at first until the cats decided her pen was off limits.
Rating: 4 stars