Insect identification

Asked September 10, 2019, 6:30 PM EDT

My yard is being eaten by insects. I don't want to make a mistake identifying them. Can I put Diazanon on the surface for a day and water it the next day? Won't that kill whatever is the problem?
Thank you
Richard H

Arapahoe County Colorado lawns and turf insect issues lawn

1 Response

Homeowners should never treat a lawn or yard without identifying the source of the problem or what the pest is. There could be multiple issues all with differing causations.

There are several options available:

  1. Provide 3 good photos of your lawn and the problem. Include as detailed description of the problem as possible.

  2. Take a sufficient lawn sample (6"x6"x6") to the Arapahoe County Extension office for diagnostics. There is a small fee for diagnostics.

  3. Use the Lawn Check service. The Horticulture Agent can make a site visit and give an accurate assessment. There is a $75 fee for this service and can be scheduled at this link:

Based on your question history, it appears that you have been previously informed that Diazinon has been banned from residential use since 2005 and should not be used.