Red Wiggler Composting Worm MixSummer Heat Alert! Between June and September, we keep an eye on temps at your location and at our discretion, we may delay your shipment if we determine the temperatures at the destination or at the shipping location will be too high. Thanks for your understanding! Red Wigglers, aka eisenia fetida are the most common composting worms as they can tolerate the greatest range of environmental conditions. Expect 800 1000 worms per pound. Your worms will