The new 2014 DOGTEK No Bark Spray is one of the most effective collars on the market using a proven method to train your dog not to excessively bark. When your dog barks, the DOGTEK No Bark Spray delivers a short spray of harmless citronella mist towards the dog"s lower jaw. Completely harmless and painless, the citronella anti-bark collar is scientifically proven to be the most effective on the market. The collar is automatic and does not require human involvement. It does not use static corrections or beeps, so it will not create any extra anxiety for the dog. Within a short period of training time, the dog begins to associate the citronella spray correction with their bad barking habits further reducing your dog"s desire to excessively bark. Product Features : Dogs 6 lbs. and up can use the No Bark Spray Collar; The spray is harmless and effective bull; Device is Lightweight (2 oz.) and great for most breeds bull; Uses 6-volt alkaline battery (included).What"s Included in the Package: 1 DOGTEK No Bark Spray device bull; 1 refill canister of citronella spray; 1 adjustable nylon strap collar bull; 1 6V 4LR44 battery 1 user"s guide.