Excellent idea, Ezmeralda. However, I agree spraying them with a water works very well. Years ago I was breeding and handraising double yellowhead amazon parrots. My cats were very "interested" in the babies. We hid behind the curtains and used a spray bottle whenever they went near the tank with the babies. After a few times, they never ventured near them again. Somehow, my cats instinctively know not to mess with my speakers. If you use the spray bottle, be careful not to get the inside of the speaker wet. The same is true if you try Ezmeralda's approach, which I think would be very effective!
