I did a poll on here a few years ago and there was only 1 vote saying they didn't work. I think that person just must not have been using it right.
Here's a link to the thread, the poll part must have been lost in the conversion to the new format last year, but in the very last post it sounds like it was at 98% saying that it works.
http://huntingnet.com/forum/whitetai...ml#post3019474