Bests & Worsts Reviews from Amazon

2 individually wrapped collars are included and each one lasts 6 months so this keeps your dog protected for a full year. These are waterproof so your dog can be bathed, swim, or play in the rain while wearing it and it doesn't diminish the effectiveness. They are long enough to fit around most dog breeds (maximum 26in neck) and you just cut the excess length off after fitting it. They do not leave behind a residue or oily film but they have a very, very strong scent that dissipates after several days. The scent is a kind of clean soapy scent and touching the collar leaves the scent on your hands. It's not visually appealing but it is working well to kill and repel the fleas/ticks/mosquitoes. The plastic buckle needs to be a bit sturdier. I have active dogs and I need to readjust these collars at the end of the day as they loosen a little too much. If you find this review informative and helpful please click on the "helpful" button below. Thank you.