mealworms I would get rid of them.
The mealworm feeds on anything in a decaying state. They will sometimes feed on living plant matter but that’s mainly to receive their intake of water that is needed in their diet. Their desired habitat is dark areas that are full of dying matter and vegetation. They will commonly feed on dead leaves, grains, oats, feces, dead insects and more. There is an abundance of food for mealworms as you can imagine.
They don’t drink water like most animals do. Instead consume it through foods that have water within it. Things like living vegetation are a great source of h2o for them.