Tenebrio molitor This bait is hardly used as a fishing bait anymore but is used as a source of food for many pets and wild birds. If you are a Blue Bird fan this grub is the best item to attract and keep these birds in your yard. The meal worm is very easy to keep and care for, just take out of the shipping container and store between 45° and 50° and you will have a long shelf life out of this grub. Available year round.