Yes, I was starting to think color might matter, but they have eaten plenty of yellow cat5(s), and orange power cords, along with green ones. They don't seem to like the green spt2 (indoor) cords at all. Oh yeah, found some red and orange cat5 eaten as well ... so I don't think they care. Also, they like the toxic waterproofing on the smart string nodes a lot ... even ate down the harder inner casting of about 10 nodes. I still remember my roommate in college getting a bunny as a present from his girlfriend ... and that beast ate anything and everything in sight. It really made me realize why so many bunnies in captivity have to live in a wire cage. I agree, there appears to be home brews on the internet galore ... but if it works, its really worth it already. If the premixed smells this strong, I can't imagine what the concentrate would be like ! So far, no additional damage. In fact, I haven't seen them in the front yard at all lately ... which is a good sign ... and last night the OWLS were out in full force --- I'm pretty sure one of them must have been perched on top my 8' Holdman start which is sitting on top of my highest point of the roof .... YES !!!