Let me know if it works.I have one cat that goes outside (the other is too chicken of the chickens lol) and she destroys the gardens. And never the ones I don't care about, just the perennial beds right in front of the house. I've yelled and sprayed her with the hose, but it still doesn't seem to be helping. I don't think the rudbeckia will make it this year.
Well it didn't work. However, to be fair, I'm going to give it another try. It rained last night, and washed off a lot of the powder. I applied another generous dose. I'll check it tomorrow.