Cats

We have 4 very large planters that have become the local cat litter box.  This weekend we decided to clean them out and get ready to actually plant some fruit and veggies.  I got several ideas online and decided to go with a 3 part strategy.
Here's a picture of what we came up with.

Unfortunately, the next morning a cat decided to walk right through the skewers and was not deterred by the chili pepper or lemons (cats aren't supposed to like citrus).  So, I rearranged the skewers to cross and point toward the outer rim and so far so good.  I also put motion activated Zurg out there to scare the cats away.  I sure hope we can get this figured out.  It is so gross!!!