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Does Cold Kill Head Lice?

Does Cold Kill Head Lice?
Created on 
December 26, 2017
Updated on 
July 29, 2022

Every year, right after the chill sets in the air, after parents have sent their children back to school, many people assume that lice infestations will not be a problem. It is a common myth that lice will die off in the cold months. Lice do not die off in the cold months because they live in a warm environment that stays 98.6 degrees Fahrenheit - the human head. During cold months, lice treatment is as necessary as it is during warmer months or in warmer climates.

DOES COLD KILL LICE?

When considering the subject of lice in cold weather, it's important to know the facts. Sorry to say, cold weather has no effect on head lice. The basic principle behind this is that lice live on the human head, and no matter what the temperature is outside, the temperature of the human head will remain a constant 98.6 degrees.

HOW LONG DO LICE LIVE IN THE COLD?

What happens when they fall off the head? Lice do not like to leave the head, especially when the temperature of the head is less inviting. However, in the very rare case of a louse falling off the human head in the cold, the principle regarding how long lice live applies. Off the human head, live bugs can only survive for one day because they don’t have food, which for them is human blood. It is safe to say that when it comes to being outside, the chances of that louse surviving by finding a new human host is a non-reality. For a louse to make it to the human head, the head needs to make direct contact with that bug….and what are the realistic chances of that happening?

HOW DOES COLD AFFECT LICE?

If left in a cold environment off of the head, lice will die. Even in warm environments, when away from their food source, head lice survive for only a short period of time. When off the head in the cold, adult lice will likely die more rapidly.

DOES COLD REPEL LICE?

A repellent is something that is applied to another object to deter or keep something away. A great example is mosquito repellant, which is applied to the skin to make it repulsive to mosquitos. As cold is an environment, it would be impossible to use cold as a repellent to keep lice away.

Can Lice Survive In the Cold?

Will lice die in the cold? Yes, but not due to the elements. If a louse is in a cold environment, that means that it has been separated from its food source – the human head. Lice need to feed on the human scalp several times a day. Without that within 24 hours it will die of starvation.

CAN COLD WATER KILL LICE?

Cold water does not kill head lice. If dumped on the head, the lice will only cozy up closer to the scalp, hanging on tightly with its legs. If a louse somehow makes it into cold water, it may slow down some, but will die as a result of being removed from its home.

WHAT COLD TEMPERATURE KILLS LICE?

Lice live on human heads, not in the home. Laundering your linens or cleaning your home in hot or excessively cold water is not the reason that lice die. They die from being separated from their host. Treating head lice with an approved lice treatment will eradicate an infestation. To address lice on hair accessories, put them in a Ziploc bag in the freezer overnight. Sustained time in freezing temperatures, like a freezer, will kill head lice and their eggs by freezing them through and through.

CAN I KILL LICE IN THE FREEZER?

Extreme cold temperatures, like the average household freezer or deep freeze, will cause lice to die. This extreme cold will freeze the natural liquid that exists in lice, killing them. It does not take long for lice and nits to die by way of freezing them due to their small size - about the size of a sesame seed. When dealing with a lice infestation, after a thorough comb-out lice treatment, hair brushes, nit combs, small stuffed animals, and other small items can be placed in a plastic bag and in the freezer. Any lice eggs or a bug on these items that may still be alive will be killed in the freezing temperatures. Keep in mind that the bugs will die anyway, if separated from their host for a day.

HEAD LICE NEED A HUMAN HEAD TO SURVIVE - THAT IS ALL

lice tips survive cold weather alive eggs bugs children girl boy

If you see your child scratching his or her head, whether it is warm or freezing outside, grab a light and check for translucent eggs in the hair. If you need lice treatment, a technician is available, often at a moment's notice to come to your home so that you don't have to brave the cold and find us. We aim for comfort, privacy, and convenience; we make house calls and conduct head lice removal in all infested family members, regardless of the weather! We are experts at treating and removing lice. Call our lice treatment service at 800-224-2537 for affordable, quality service you can trust backed by our 30-day guarantee!

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