How Hot Does It Have to Be For Fleas to Die?

Fleas need a warm environment in order to live. Despite what you may think, they don’t die when the temperatures fall below freezing. If you live in an area with low temperatures, fleas may still survive for about 10 days. That’s because they still have food and warmth inside.

One way to kill fleas is to heat your home to about 95 degrees Fahrenheit for two days. It’s important to note that this will not kill adult fleas, but you will kill their eggs. In addition to heat, you should also consider humidity. When humidity is below 75 percent, flea eggs will desiccate. Alternatively, if the air is completely saturated, flea eggs will also die.

Another option is using a steam cleaner. This method is very effective for killing fleas and is especially helpful in homes where there are children. In addition, steam cleaners work great for drying things that would be difficult to dry. This method is also highly effective for killing fleas at any stage of their life cycle.

A car’s interior temperature can also kill fleas. Depending on where you live and what time of year you live, your car’s interior temperature may be hot enough for fleas to die. In direct sunlight, this temperature can reach over 100 degrees.