i started by leaving the cage the mealworms were in, a clear critter ceeper, in front of the tank so the frog could get used to them moving around. then i tried offering them via forceps every week or so until he finally took one and then things just got better from there. it is all about patience and timing. it is unusual for them not to like crickets, but if it eats other food then i would not worry to much as long as you use supplements like calcium and multiviatmins dusted on the mouse.