I have an adorable grey cat named Gilbert who chews up my shoe laces that are on my shoes. I got Gilbert from the Humane shelter a couple years ago and he seems a bit high strung. He doesn't like getting picked up and moved about or held captive. If it is his idea to come over and sit on my lap, he then is quite affectionate. I've tried useing bitter apple sprays and have some of the older bitter apple grease on my shoe laces but once it wears of he's back at it again. Must I continue to be a witness to the phrase; with the suddeness of a broken shoe lace!