Colette Granville asked 8 years ago
How cold does it have to be before fleas, larvae and eggs are killed?
1 Answers
Adam Retzer Staff answered 8 years ago
No life stage can survive freezing temperatures for extended periods.
Adult Fleas
Adult fleas die at 37.4°F within 10 days. They’ll die within five days at 30.2°F.
Adult fleas live permanently on their hosts once they jump on it. Thus, they can survive winters on the warm-blooded animals.
Eggs & Larvae
Flea eggs can survive to hatch at 50.4°F, but 100% of larvae will die within 10 days at this cold of a temperature. At 46.4°F, all eggs die within 10 days.
Immature stages develop in the environment. They can survive winters in homes or freeze-protected animal dens.
You can read more about this topic here:
Do fleas die in the winter
