You will get the best results when your dog wears the collar 24 hours. it is recommended to keep the EM collar on at all times during the tick season.
(it can take up to 4 weeks until the EMs START TO do their job)
Rinse the collar thoroughly under warm tap water and let it dry in the sun about every second week. (don't use soap or other chemicals!) It is very important to keep the pipes clean! You can also use a little nail brush, if you want to.
Swimming with the collar is no problem; just let it dry in the sun afterwards. (although it is NOT to be used in Pool water with bleach or other chemicals in it! )
An EM collar is only an addition to your main collar! Please do not attach a leash to it!
For your dogs safety: please take the collar off, when your dog is playing rougher than 'normal' with other dogs. It is no problem to take the collar off for a little bit during the day.