Munchkin Stay Put Suction Bowls Reviews

I purchased the munchkin stay put bowls when my daughter started learning how to feed herself. I thought they would be great to take to restaurants and they were the perfect travel size for her diaper bag. The first time I tried one was at a restaurant with the smooth top tables. I naturally assumed they would stick since the tables were made this way. I was mistaken. It stuck for all of two minutes until my daughter grabbed the handles and pulled it right off the table. I tried wiping off the table and bottom of the bowl with a wipe and it still didn't work. I then tried to use them on other surfaces...