Kimba is a great guard dog! She protects our yard with great tenacity... however the neighbors do not appreciate that this comes with barking... Which also happens when dogs in neighborhoods miles away tell her that something is up... She barks a lot. Especially at the dogs next door through the fence... They have wonderful conversations, all day long. The neighbors REALLY don't like that... so we have been reported to the ranger a few times... This led me to researching anti-bark collars. I originally purchased a second hand dog-line collar. It worked wonders for a few months, and then I needed to have the battery changed. At which point my relationship with the company began. They are AMAZING! The collar I had bought was a very old model, but they changed the battery and provided wonderful, friendly and super fast customer service while they were at it! I bought a new model collar recently because the old one worked so well and I wanted that reliability again (It ran out of battery after about 3 years and so I figured it's time to spring for a new one). We can now hear the birds sing in the morning and I can focus on my uni lectures during the day because there is no constant incessant barking happening all day every day - THANK YOU THE DOG LINE!! :D