feeding cup

I am able to get my cham to eat mealworms by hanging a plastic cup with holes in it from the ceiling of his cage. As the worms dangle he sees them and snatches them up. But a lot of them end up on the floor of the cage... Any possible solutions??

They fell in and just kept at it. Also a peek at the kind of feeding cup I use in heavily watered cages. Dries out quick and remains much cleaner. IF you are not using cups like this you are not doing it right :p