It seems more difficult to get the treats out than the twist n treat in fact the best results are got from sheer clumsiness tripping over it works well

They are all extremely good quality but this is my least high rated as im finding the last 1 or 2 bits of kibble seem very difficult to get out with the dogs verging on frustration rather than enjoyment when several circuits of the kitchen produce no result

There is a circle of soft rubber prongs around the hole in the base you trim these with scissors to allow the size of treat you are using to come out

I dont regret buying it as it was quite cheap and provides a bit of interest and variety but if youre only buying 1 i would suggest starting with a different one and get this as an addition if your dog takes to the general idea