My Herby cat absolutly loves Webbox, i started off using them as a way to trick him into taking his medication, However after a few days of having them he learnt were they were stored in the kitchen and climbs all over the cabinets scratching the door until i give him his daily treat. Luckily they are cheap enough to keep up with is addiction, but it makes him happy and they are not causing anything wrong, so i am now the proud owner of a very happy little cat.
Definatly worth a try