use predator calls,I have had does standing within 5 feet of my fx3 and turned on rabbit cries at low volume and they dont spook,they are not predators and are not alarmed by the sound at all,I would not recomend a loud noise as it will bother the deer but mouse squeaks and bird sounds seem to be best for cats and of course rabbit sounds work good but I like the higher pitch for cats like baby rabbit sounds or bird sounds but you aint going to spook the deer unless you are blasting the woods with a loud sound...atleast I have never alarmed them with encounters I have had while using predator calls...