Hello Charly, You are right, Red worms can't take the heat. Once it gets above eighty five they start to die. They will try to escape the container thay are in and if they can't they will die. I found that out the hard way and lost about half of mine last fourth of july when I was out of town. I feed mine purina[ not spelled right] laying mash and old bread. Any green left over veg. from your table, also coffie grounds and egg shells. Crush the egg shells with your hands before putting them in the bed. The egg shells help them digest thier food. Keep the soil moist but not wet. I went out to my worm bed yesterday to feed them and man I must have thousands of red worms. I will never use that many worms. Wish I had a way of getting some to you I would give you enought to start your bed. I payed twenty dollars a pound for the two pounds I ordered when I started plus postage. Good luck and if I can be of any help let me know. Jimmy S.