I made a post on it a while back
http://yorkietalk.com/forums/showthr...ghlight=wizdog
the customer service is great... They replaced my grid free of charge.
in addition , we could never get chester to go inside... I wanted him to be able to do this incase we came home late or for winter time... He just refused to go on paper for puppy pad... but with the wizdog... he learned in one week...
and he was so prod of hisself too. I sware he was smiling.. look what i did look... we gave him big treats and hugs.
Chelsey also uses it... too. she no issues there... She also goes inside and out .
using this with the playpen is very good. for a small dog you only need one... uless you want to put one in each room.
right now we have it downstairs as chelsy seem to think the carpet is grass. So she used it down stars.