I thought it was great. Unfortunately my dog didnt. She spun around in circles for a few moments then hung on the side of it and screamed.  She didnt bark she screamed like someone was killing her.  It is now being used as a fence to keep her from the gate as she is only 2 1/2 lbs.  She is a chorkie.  Unbelievable.
Dont know how many stars that gets.  Sorry