When Can Beneficial Nematodes Be Applied After Using Diatomaceous Earth

Question From: Wichita, Kansas, United States
Q: I applied diatomaceous earth to a flea infested yard, concentrating under deck where cat hangs out. I bought beneficial nematodes. When can I apply them? How long will they keep under refrigeration?

A: Contact the company you bought them from. The one thing I do know about BN is the soil should be moist when you apply them and they need to be watered in. Best And Happy Yardening, Nancy.