We offer a 100% Satisfaction Guarantee! All products will arrive to your home in great condition or will be be replaced. We ship your Gusanito Worm Factory before shipping worms, to assure a safe place place to place worms when they arrive to your home. We ship worms priority mail each Monday, so they will not have a lay over on a weekend in our U.S. Mail System. Worms arrive alive or will be replaced. We have partners all over the U.S. raising worms for us, your worms will be shipped from the worm farm nearest you to assure a safe arrival.