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Understanding Head Lice and How Lice Survive

Head Lice Life Cycle

Head Lice Life Cycle

Understanding Head Lice

When a family has a head lice infestation, there is a tendency to panic. Dealing with head lice can be frightening and stressful, primarily because people don’t tend to talk about how to treat head lice until they are dealing with them, which is when they are frantic and frustrated. Understanding head lice can help reduce some of the fear and anxiety associated with an outbreak. Lice are parasitic insects.  This means that lice need some kind of host to provide an environment where they can survive and propagate. Head lice have evolved with humans for hundreds of thousands of years, forming a parasitic relationship with us to the point where now the only environment lice can live is on a human scalp with hair. The hair is their home, and the scalp is where they get food. They have developed six claws designed specifically to attach to human hairs close to the scalp where the lice can sip blood.

Understanding Head Lice Life Cycle

The life of a louse (singular for lice) starts as an egg or nit. Female lice lay about a half-dozen eggs every day.  The nit is a tiny yellow speck about 1 millimeter long with a glue-like surface. Nits are very difficult to see and remove (hence the term “nitpicker” to describe someone with extreme attention to detail). Nits hatch after 7-10 days and begin life as immature nymphs. After about 10 days, they grow to full size.

Lice need to eat several times a day. They move onto the scalp and pierce it to draw blood. Lice can’t live without a human host for more than 48 hours. This is important to know when dealing with an infestation because there are some misconceptions about how lice spread and how to respond. Lice cannot “fall” on pillows, sheets, stuffed animals, and other bedding unless the hair that they are attached to fall. But they can’t live on these surfaces, or on hats, scarves, furniture, or carpet. They also can’t live on pets or any other animals.

Nits can’t live without a human host. The warmth of the body provides the needed heat for nits to gestate. Nits that are removed or that fall in the form of lost hair die before they hatch.

Understanding Head Lice Removal in Your Home

All of this means that if your child has lice, you don’t need to fumigate your house or pack away anything made of fabric in plastic bags for weeks. You just need to wash the clothes, bedding and towels that the person with lice has used, and dry them in high heat (lice can live underwater for several hours). Any stuffed animals on the bed can be put in the dryer for about 20 minutes on high heat to kill any lice and eggs. It is also important to wash any brushes or other hair accessories that may have been used by the person with lice. The CDC recommends washing in hot water (at least 130 degrees). It is also important to think of other places where the person with lice has put his or her head where hairs with lice may have fallen—hats, backpacks, car seats, etc.

Lice can’t fly. They can barely move at all. They only spread by moving from one person’s hair to another person’s hair when the people are making hair-to-hair contact—either directly or through items with hair on them.

At the end of the day, if you or someone in your life has lice, don’t panic.  We have a proven, chemical free 5 step process that can get you lice free in about 1 hour.

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