T-rex leopard gecko dust ICB

I just bought some supplies so I can get a leopard gecko. I purchased some T-rex leopard gecko dust ICB for my multivitamin. It says that it is to be used for every feeding but I have heard that most people only give their geckos multivitamin once every few weeks. I just want to know how often I am really supposed to use it. Mealworms are going to be my primary food source and will provide some in a dish at all times. So should I dust all the mealworms each time I replace the eaten ones?

if its a baby gecko every feeding and adults can skip once in a while. justs let your gecko free feed when its a baby(just fill your bowl with food items) and pour in some multi vitamin and calcium powder (i think the t rex has calcium correct?) that way the food is always covered. also make sure to gutload your meal worms throw in a crunched up granola bar or something that they can eat before you feed them to your gecko its healthier that way.

Im pretty sure that it does have calcium in it. I will also provide a small dish of calcium powder in the tank at all times. As for the gutloading I will be raising my own mealworms so they will be gutloaded. I just did not want to give it too much multivitamin. Since that would probably be bad.