Use insect repellent
The most effective insect repellents in the United States include one of three active ingredients:
DEET
Icaridin (also called picaridin)
Oil of lemon eucalyptus (a plant-based compound)
These repellents temporarily repel mosquitoes and ticks. DEET may offer longer lasting protection. Whichever product you choose, read the label before you apply it. If you're using a spray repellent, apply it outdoors and away from food.
If you're also using sunscreen, put it on first, about 20 minutes before applying the repellent. Avoid products that combine sunscreen and repellent, because you'll likely need to reapply sunscreen more often than repellent. And it's better to use only as much repellent as you need.
Used according to package directions, these products are generally safe for children and adults, with a few exceptions:
Don't use DEET-containing products on infants younger than 2 months.
Don't let young children get DEET or icaridin-containing products on their hands or faces.
Don't use oil of lemon eucalyptus on children under age 3 years.
Don't apply repellent under clothing.
Don't apply repellent over sunburns, cuts, wounds or rashes.
When you go indoors, wash with soap and water to remove any remaining repellent.