I have had some mixed results. It has no effect inall except one spot i hunt. In all these spots, i have rattled on many occasions, even when i have seen deer in the distance and tried to bring them closer. They just paid it no attention. I hunt another spot where the buck to do ratio is alittle better than most of the state, but not much, but it does seem to have alittle effect there. On 2 occasions this year i have had a buck cross the field to look where i was, but never came closer since it couldnt see anything. If i had a decoy out i bet they would have come in. IMO, try it, it wont hurt anything, that is for sure, plus it will give you something to do up in the tree to keep you busy and alert.