the BM has decided she does not have time to fly spray my pasture horse. I want to know if this product has worked for you or if you may have had issues with it. it says it lasts 2 weeks. That would be ideal in my situation, but i also worry about adverse reactions to it. Is it too strong? will it burn the skin? Thanks for any opinions on this product.
http://www.doversaddlery.com/freedom-45-spot-on-fly-control/p/X1-23054/