Mealworms in Feeding Dish?

I was just wondering....those of you that feed mealworms in a feeding dish...do you just fill the dish and refill when it's empty...or do you just put in enough each day and then refill on the next feeding? Thanks....

Since I feel live mealworms, I put in enough for the day and then refill next feeding. Mealworms tend to dry out fast when left in the feeding dish without being fed themselves.