I dont really think mealworms or any insect are the most approiate food for your redfoot (or any tortoise really). Heres what my torts eat:
Dandelion greens, endive, escarole, turnup greens, sometimes romaine, timothy hay (for the leopards), some fruit for my redfoots (canteloupe, strawberries, tomato, mango, ect), and of course Ive never seen any tort that wouldnt eat moistened MAZURI tortoise chow.
Check out www.tortoisetrust.org for articles on what and what not to feed tortoises. They have an article that specifically addresses redfoots. I would bet that most on this board would agree that intentionally feeding insects is not really the correct thing to do. If you are trying to give your tort protien just feed a bit of mazuri tort chow, it has more than enough protien for a redfoot. Just because the tort will eat insects doesn't mean the should eat insects. Anyone have anything else to add???
Hope this helps...
-Ian