Officials from the Maine Center for Disease Control and Prevention and the Maine Forest Service are reminding residents to take precautions as browntail moth caterpillars become more active.

According to the Department of Health and Human Services, browntail moth caterpillars shed tiny toxic hairs that, if on the skin, causes a rash. If inhaled, they can cause trouble breathing and may require medical attention.

The Department says the greatest risk of exposure to these hairs is between April and July. This is when the caterpillars are most active.

Browntail moth caterpillar hairs can land anywhere, including trees, outdoor furniture and decks and remain toxic for up to three years.

The department says individuals affected by these hairs develop a rash that lasts for a few hours to several days. However, those more sensitive may get a rash that is more severe and last for weeks.

The department says there are steps you can take to protect yourself from browntail moth hairs. One way is by avoiding areas infested by caterpillars.

Department of Health and Human Services also recommends that when performing outdoor activities, to aim for damp days or spray vegetation with a hose. It is also recommended to wear tight clothing around the neck, waist and ankles.

The department also advises taking cold showers and changing clothing after outdoor activities, as well as drying laundry inside to avoid the hairs from getting into the clothing.

Visit the Maine CDC’s page for more information.