Their distribution within an area is patchy. They are most active in afternoons and when the ground temperature is about 77-86F. They become inactive below 60F, and the ones that bite us are killed below 42F. Chiggers avoid objects hotter than 99F. Sun-baked rocks are usually chigger-free. "
http://mdc.mo.gov/discover-nature/field-...
I live in north texas and chiggers are a problem. I was wondering if at some point during summer, it would get to hot for them to survive? And when in winter do they finally stop biting?
