We have been on it for about 2-3 years. I give all my fawns three shots. 7, 14, 21 days and adults in Jan-Feb and another booster in June after the fawns are born. It may be over kill but I feel that the $ 3-5 per shot is cheap protection. Check with your state vet about getting it in your state. We had heck getting it into Oklahoma at first. I truely believe that it has saved a lot of deer in several states. Bill Pittenger will help you in any way he can and be able to answer all the questions about the vaccine. He is a wealth of knowledge on deer health issues. Good luck
Michael Peters
Arrowhead Whitetails / Cola Blanca Deer Co.