This collar worked well in helping us stop our large German shepherd from barking non stop. After 1 or 2 times of having to use the collar he only had to be tested once and that was enough with a verbal command to help him learn his bark was negative behavior. I did not find this overly Harsh. Actually tried it on myself in my husband 1st and found it to be uncomfortable but not hurtful. It is very well made and durable and shows no signs of wear or tear in about a month of use.