I use the no-flash CUDDEBACKand they spook from that one some too. I bought the no-flash for the simple fact that they wouldn't get spooked from the big white flash, they still get alarmed by the red lights flashing.Some deer don't get bothered from it and some do. Thats why i got the infared so they wouldn't see the big white flash. When i run video's on my cudde they get real nervous about all the red lights when its taking a video. I gurantee they will get spooked sooner or later with the big white flash, its just a matter of time.