We only ship live organisms on Monday and Tuesday of the week. Late Tuesday orders and beyond will be shipped on the next following week. This is to prevent package being held in the post office during the weekend, and minimize the transit time for the organisms. Regular non-living product may be shipped out any day of the week on our staff availability.If temperature drops below 40°F or rises above 85°F in your location, please inquire us to have your item(s) shipped via USPS HOLD FOR PICKUP to your local post office. If not requested, your order will be shipped out as regular mail by default.