The folks that run the community garden by my house used ladybugs from tiptopbio.com this summer. Looks like they have quite a selection of other beneficial critters at great prices at https://gardeningzone.com/ including various nematodes. They even have a nematode subscription.I'll stick with that and hopefully you are correct! Speaking of, I tried to order the mites or nematodes that you suggested from Arbico Organics and they don't ship to Va. So that blows!