The EasyDefense Tag lasts 1 year when attached and used as directed.
Your pet is protected from fleas, ticks and mosquitoes when wearing the tag so it is important to keep the tag on your pet's collar and the collar on your pet in order for the tag to work. You may remove the collar with the tag at night if you keep it in your pet's bed next to them. After the initial "activation" phase is complete (the first 3-4 weeks) the collar with the tag can be removed for very short amounts of time (for example, a bath) but should be put back on your pet immediately afterwards.
The EasyDefense Tag will not be harmed by normal wear and tear but in order to maintain effectiveness, occasionally rinse the tag with water only to remove the dirt and oils that may build up on the tag.
The EasyDefense Tag is waterproof. However, just make sure that during the initial "activation" phase (the first 4 weeks) that you remove the tag during baths and long swims. After that 4 week period is over it is fine to leave the tag on while your pet is in the water.