What specific species of nematodes do I need to put on my lawn to kill fleas? How many should I put per square foot? Are they at all harmful to humans and/or pets? Thank you.
Baltimore County Maryland
We do not have research or data on this method, but nematodes in the soil in this area would not be harmful to humans or pets. Though you may find the species name you want with an online search, keep in mind that working with nematodes is difficult.
Here is the approach we recommend for managing fleas: http://extension.umd.edu/hgic/fleas