I know frogs need to feel very secure before accepting food from tweezers/forceps. I would say they will catch their food if they are hungry enough and provided there isnt an underlying problem like an illness. Keep track of how many insects you are feeding them each time. That way you will know if any have been consumed or not for sure. I use the fifteen min rule that is usually referred to on here. That eliminates leaving the food in the enclosure as crickets and such are dirty, nasty little germ spreaders. You could also try putting your frogs in a separate smaller container to feed them. Good luck!