I got these flea and tick collars because I'm constantly having an issue with fleas on my cat AND dog in the warmer months, so I like that these come in a 2-Pack, and they're quite affordable. I noticed the scent of them as soon as I opened the canister, but it's a nice, light one. I also like that they're waterproof, not a lot of these types of collars are, but now I can keep it on my dog when bathing him as well, my cat will not come near water even if I try haha. The material is good, and they seem very sturdy, so I'll definitely be using these all spring/summer long!