Additional information for sourcing your cleanup crew: ' Springtails US is a one-person business, so I'm limited in how much I can keep in stock. I typically restock springtails and isopods every Saturday night (not always every species) but unfortunately I don't have enough space or time to provide everybody with the species and quantities they need every week. There's many other reputable businesses to order from, and social media springtail/isopod groups can help you find them. When ordering cleanup crews from Springtails US, be sure to check the FAQ for information on packaging and how to remove the springtails and isopods from their shipping cups. I aim with my packaging to make it as effortless as possible to seed your enclosures with their cleanup crew. Shipping medium is outlined on the product pages for springtails, and springtails which ship on clay can be cultured in their shipping containers. When ordering springtails elsewhere, many businesses sell 'cultures' or 'starter cultures' of springtails so you may not know the exact quantity you're receiving. It's always best to order your animals well in advance when setting up a bioactive enclosure, and making your own springtail and isopod cultures is a great way to ensure that you have enough for your needs. You can start with 50 or less springtails and 10 or less isopods. See the Care Guides for more information.