Tinks 69 either works like a charm or spooks them terrible. I have seen it on numerous occasions work and on other days it's like they stepped on an electric fence.
The only one I have come across in 30 + years that either works great or they show no notice to it all is Pete Rickards Interdigital..... Smells like you stepped in something bad on the way to your stand but it works. Can't list the number of deer both bucks and does that have come straight in on it.. What I can tell you is I nor any of the guys I hunt with have ever had a deer spook on it.. They either come in or pay it no mind...