I was worried because USPS delivered them a few days late and it was starting to get warm here in Texas. I did try to intercept the package so it'd be held at the post office but it wasn't successful. Luckily I was home when they were dropped off at my porch and I was happy to find the worms were very much alive, despite being a little stressed from the journey. They immediately started making castings once I put them into a worm bin with cured substrate. Midwest worms has yet to disappoint me!