Insect Repellent Safety for Babies
Content reviewed against published AAP, EPA guidelines
Last reviewed:
If your baby has been diagnosed with or you suspect insect repellent safety for babies, here is what the evidence says.
The short answer
The AAP and EPA recommend against using any insect repellent on babies under 2 months of age. For babies 2 months and older, products containing up to 30% DEET or 20% picaridin are considered safe and effective. Oil of lemon eucalyptus should not be used on children under 3 years. For young babies, physical barriers (mosquito nets, long sleeves, screens) are the safest option. Apply repellent to clothing rather than skin when possible, and never apply to hands, eyes, or mouth.
Key takeaways
- The AAP and EPA recommend against using any insect repellent on babies under 2 months of age. For babies 2 months and older, products containing up to 30% DEET or 20% picaridin are considered safe and effective. Oil of lemon eucalyptus should not be used on children under 3 years. For young babies, physical barriers (mosquito nets, long sleeves, screens) are the safest option. Apply repellent to clothing rather than skin when possible, and never apply to hands, eyes, or mouth.
- Usually normal when: Your baby has a few mosquito bites despite your best prevention efforts — some bites are inevitable
- Call your doctor if: Your baby shows signs of an allergic reaction to a bite — difficulty breathing, facial swelling, widespread hives — call 911 immediately
- Varies by age — see the age-by-age breakdown below
“Fever itself is not an illness — rather, it is a sign or symptom that the body is fighting an infection. Fever stimulates certain defenses, such as the white blood cells, which attack and destroy invading bacteria.”
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By Age
What to expect by age
0-3 months
Do not use chemical insect repellents on babies under 2 months. Protect young babies with physical barriers: mosquito netting over carriers and strollers, long lightweight clothing, and staying indoors during peak mosquito hours (dawn and dusk). If you are in an area with mosquito-borne diseases, discuss additional precautions with your pediatrician.
3-6 months
DEET (up to 30%) or picaridin (up to 20%) can be used on exposed skin. Apply sparingly and avoid hands and face. Spray on your own hands first and then apply to the baby's skin. Do not use combination sunscreen-repellent products. Remove repellent when you come indoors by bathing the baby.
6-12 months
Continue using DEET or picaridin as needed. Apply once — repellent does not need to be reapplied as frequently as sunscreen. For tick prevention, treat clothing with permethrin if you are in tick-prone areas (do not apply permethrin directly to skin). Check for ticks after outdoor play.
12 months+
Toddlers who play in grass and wooded areas need both mosquito and tick protection. Teach your toddler not to touch their face after repellent application. Continue avoiding oil of lemon eucalyptus until age 3. After outdoor play, check for ticks in hair, skin folds, behind ears, and diaper area.
What Should You Do?
When to take action
- Your baby has a few mosquito bites despite your best prevention efforts — some bites are inevitable
- Mosquito bites cause localized redness and swelling that resolves within a few days
- Your baby is fussy or scratches at bug bites — apply calamine lotion or a cool compress
- You are using an EPA-registered repellent as directed on the label for your child's age
- Your baby has a large, swollen reaction to a bug bite that spreads or does not improve after several days
- Your child develops a fever, rash, or body aches after multiple insect bites, especially if you are in an area with mosquito-borne diseases
- You found a tick on your baby and are unsure whether additional monitoring or testing is needed
- Your baby shows signs of an allergic reaction to a bite — difficulty breathing, facial swelling, widespread hives — call 911 immediately
- Your child develops a bull's-eye rash after a tick bite, which may indicate Lyme disease and requires prompt antibiotic treatment
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Insect Repellent Safety for Babies.
Things to mention
- Your baby has a large, swollen reaction to a bug bite that spreads or does not improve after several days
- Your child develops a fever, rash, or body aches after multiple insect bites, especially if you are in an area with mosquito-borne diseases
- You found a tick on your baby and are unsure whether additional monitoring or testing is needed
Observations to share
- Your baby has a large, swollen reaction to a bug bite that spreads or does not improve after several days
- Your child develops a fever, rash, or body aches after multiple insect bites, especially if you are in an area with mosquito-borne diseases
- You found a tick on your baby and are unsure whether additional monitoring or testing is needed
Urgent signs to report immediately
- Your baby shows signs of an allergic reaction to a bite — difficulty breathing, facial swelling, widespread hives — call 911 immediately
- Your child develops a bull's-eye rash after a tick bite, which may indicate Lyme disease and requires prompt antibiotic treatment
My notes
From ismybabyalright.com — free, evidence-based baby health guides
Related Conditions
Sunscreen for Babies Under 6 Months
The AAP recommends avoiding sunscreen on babies under 6 months when possible, as their skin is thinner and absorbs chemicals more readily. The primary protection should be shade and protective clothing (long sleeves, wide-brimmed hat, UV-protective fabric). However, if shade and clothing are not available and sun exposure cannot be avoided, a small amount of mineral sunscreen (zinc oxide or titanium dioxide) on exposed areas is considered safe and is preferable to sunburn.
Travel Vaccinations for Babies
Travel with babies may require additional vaccinations depending on the destination. Some travel vaccines have minimum age requirements — for example, yellow fever vaccine is not given before 9 months, and typhoid vaccine before 2 years. The CDC recommends consulting a travel medicine specialist at least 4-6 weeks before international travel with an infant. Some destinations may not be advisable for young babies due to disease risks that cannot be fully mitigated by vaccination.
Related Resources
Frequently asked questions
Is insect repellent safety for babies normal?
When should I call the doctor about insect repellent safety for babies?
When is insect repellent safety for babies normal?
What causes insect repellent safety for babies?
What should I mention to my pediatrician about insect repellent safety for babies?
Is insect repellent safety for babies normal at 0-3 months?
Is insect repellent safety for babies normal at 3-6 months?
Should I go to the ER for insect repellent safety for babies?
Does insect repellent safety for babies go away on its own?
References
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources
Related Resources
Bottom line
Most cases of insect repellent safety for babies are normal. Talk to your pediatrician if your baby shows signs of an allergic reaction to a bite — difficulty breathing, facial swelling, widespread hives — call 911 immediately.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Medical Concerns
Sunscreen for Babies Under 6 Months
The AAP recommends avoiding sunscreen on babies under 6 months when possible, as their skin is thinner and absorbs chemicals more readily. The primary protection should be shade and protective clothing (long sleeves, wide-brimmed hat, UV-protective fabric). However, if shade and clothing are not available and sun exposure cannot be avoided, a small amount of mineral sunscreen (zinc oxide or titanium dioxide) on exposed areas is considered safe and is preferable to sunburn.
Travel Vaccinations for Babies
Travel with babies may require additional vaccinations depending on the destination. Some travel vaccines have minimum age requirements — for example, yellow fever vaccine is not given before 9 months, and typhoid vaccine before 2 years. The CDC recommends consulting a travel medicine specialist at least 4-6 weeks before international travel with an infant. Some destinations may not be advisable for young babies due to disease risks that cannot be fully mitigated by vaccination.
My Baby's Head Shape Looks Abnormal
Many babies develop temporary head shape irregularities that are completely normal. A cone-shaped head from vaginal delivery reshapes within days. Mild positional flattening (plagiocephaly) from sleeping on the back is very common and usually improves with repositioning and tummy time. However, head shape changes involving ridges, a persistently bulging fontanelle, or rapid head growth changes should be evaluated to rule out craniosynostosis.
Achondroplasia (Dwarfism) in Babies
Achondroplasia is the most common form of short-limbed dwarfism, affecting about 1 in 15,000 to 40,000 births. It is caused by a mutation in the FGFR3 gene and is usually apparent at birth with characteristic features including short limbs, a larger head, and a prominent forehead. Intelligence is normal. With monitoring for specific complications and supportive care, children with achondroplasia lead full, active, and independent lives.
Adenoid Hypertrophy and Breathing
Adenoids are lymphoid tissue located behind the nose that help fight infection in young children. When adenoids become enlarged (adenoid hypertrophy), they can block the nasal airway, causing chronic mouth breathing, snoring, nasal speech, and sleep-disordered breathing. Enlarged adenoids are most common between ages 2-7 and are a leading cause of obstructive sleep apnea in young children. Treatment ranges from watchful waiting and nasal steroids to surgical removal (adenoidectomy) if breathing or sleep is significantly affected.
Adrenoleukodystrophy (ALD) in Babies
X-linked adrenoleukodystrophy (X-ALD) is a genetic disorder affecting about 1 in 17,000 newborns, caused by mutations in the ABCD1 gene on the X chromosome. It primarily affects boys and impairs the breakdown of very long-chain fatty acids (VLCFAs), which accumulate and damage the myelin sheath in the brain and the adrenal glands. The most severe form, cerebral ALD, typically affects boys between ages 4-10 with rapid neurological decline. Newborn screening now enables early detection, and hematopoietic stem cell transplant or gene therapy performed before significant brain involvement can be life-saving.