I was absolutely terrified about trying this collar. I’d been doing research for over a year and finally decided on this one because of the three modes. I have a partially paralyzed pit mix who is stronger than she realizes and due to her disability is very defensive and has leash aggression. We started with the beeps and vibrate mode and it’s working wonders. She even seems more at peace with going outside and has stopped going outside so defensive and looking for someone to intimidate. I used the static mode once on low intensity and haven’t had to use it again. It also has been a miracle for her barking. If you are on the fence and hesitant like I was... don’t be!! I feel so much more confident and at ease going outside and it’s no longer a dreaded hassle trying to avoid and arrange walks around neighbors schedules. I finally feel in control and have an amazing calm listener on my hands!!! So so thankful and happy I went with dog care!!