Dogtra YS300 No Bark Collar For Small and Sensitive DogsDogtra YS 300 When you want to stop unwanted barking, you need the the Dogtra YS 300 no bark collar. It is made for dogs ten pounds and over and comes with six adjustable stimulation levels. The vibration mode allows you to warn your dog prior to correcting behavior with stimulation. This model has a bark recognition feature that can distinguish your dogs bark with other sounds. It has an anti microbial collar, stainless steel contact points and an