After initial skepticism, I have to say that collar fully convinced. Our Golden Retriever bitch has virtually no firmly bitten ticks more. That was until the collar completely different. One can and I can not expect any more crashes tick on the dog also think. Since March 2014, the band is at now and it still seems like the first day. Very pleasant is the fact that there are no odors, unlike other collars. I'll buy it again when the effect wears off.