How to Recognize the Side Effects of Bug Spray

Keep pests away while keeping yourself safe

Man using gloves sprays inside kitchen cabinets
Photo: LIGHTFIELD STUDIOS / Adobe Stock
Man using gloves sprays inside kitchen cabinets
Photo: LIGHTFIELD STUDIOS / Adobe Stock
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Breaking out the bug spray is often crucial to enjoying the great outdoors, especially in the summer months; however, you’ll need to do so safely. Bug sprays, especially when overused, can cause side effects. These sprays are not only harmful to the bugs you don’t like but can also be harmful to humans and your pets, so use them with caution.

Below we’ve outlined some common side effects of bug spray, as well as some safety tips for using different types of insecticides.

Bug Spray Side Effects

In many regions, the cost of enjoying the evening breeze is dealing with pesky mosquitoes. Bug sprays have chemicals like DEET, picaridin, and permethrin, which are great at repelling insects but sometimes cause irritation. While side effects aren’t too common, they’re more likely to happen if you use bug spray frequently or use a product with a high concentration of active ingredients. 

Mild Side Effects

Most people can tolerate mosquito repellents, like DEET, with, at worst, mild reactions. These side effects are generally not serious and can easily be managed, but they should be addressed before they become worse:

  • Skin Irritation: You might notice skin tingling or redness from contact with bug spray, especially if you have sensitive skin. Wash the affected area with soap and water, and apply a soothing lotion to calm the irritation.

  • Eye Irritation: Accidentally spraying too close to your eyes can cause stinging, burning, or watering. Rinse your eyes gently with water, and avoid rubbing your eyes.

  • Respiratory Discomfort: Inhaling bug spray mist might lead to symptoms like coughing, sore throat, or a slight tightness in your chest. You’re more likely to inhale bug spray mist in poorly ventilated areas, so move to an area with fresh air as soon as you feel these symptoms. 

Severe Side Effects 

Though rare, some people can experience more severe reactions to bug spray, particularly from overexposure. Symptoms of overexposure to bug sprays can occur up to 12 hours later and include:

  • Headache, fatigue, dizziness

  • Loss of appetite, nausea, stomach cramps, diarrhea

  • Blurred vision, excessively watery eyes

  • Excessive sweating or salivation

  • Slowed heartbeat

Seek medical care if you or someone you know is experiencing these symptoms. More severe exposure—such as accidentally consuming insecticides—can lead to inability to walk, chest tightness, muscle twitching, and pupils that reduce in size. Change clothing and wash exposed skin after using bug spray to be safe.

How to Prevent Bug Spray Side Effects

You should apply mosquito repellants outside. Use as little as is needed to keep the bugs away. For small children, try to apply the bug spray to their clothes rather than their skin. Keep it off their hands—you know where those often end up.

If possible, shower before going to sleep to rinse the spray off and prevent irritation and bug spray side effects.

You might also be able to make your yard inhospitable to bugs by planting mosquito-repelling plants around your patio or play area. Take care to keep mosquitoes away by eliminating any standing water by dumping out pots and clearing gutters, too. Find a lawn pest control company near you to get even more resources.

Side Effects from Other Pest Control Products

Bug bombs and insecticides can also cause harmful side effects. While they’re effective for pest control, it’s important to use them carefully, follow all safety instructions, and act immediately if you notice any symptoms potentially caused by them.  

Bug Bombs

If the bothersome bugs are inside your house, like fleas or bed bugs, you might want to eliminate them all with a bug bomb. Bug bombs, aka foggers, or other bug sprays can be used safely in the house if needed. However, there are some tips you should follow to stay safe and avoid side effects:

  1. Get everyone—including pets and kids—out of the room and, even better, out of the house.

  2. Don’t use more product than is needed. More is not better; it’s more dangerous to you. Don’t use bug bombs in small, enclosed spaces like closets.

  3. Use the spray as instructed on the label and get out of the room. Seal it off as best you can. Leave a note on the door, reminding everyone to keep it closed.

Ideally, get everyone out of the house for the time indicated on the label since the chemicals can easily seep out of one room. If possible, stay away for four hours—particularly if anyone in the house is prone to asthma, allergic reactions, or skin sensitivity. 

Once your four hours are up, air out the space by opening the windows, and maybe setting up a fan to blow any lingering chemicals out. 

If there was any open food in the room, be sure to throw that away. Wash any teddy bears, bedding, or clothing that was exposed. Properly store or dispose of any remaining insecticide. Follow the label instructions. 

Insecticides

Insecticides are used in a variety of pest control products. It’s important that you don’t inhale or ingest them, since they can harm humans as well as bugs. 

Symptoms of Insecticide Poisoning

3 phone numbers for poison control assistance, including 911

If you follow the insecticide directions carefully, you should be fine, but some people are more sensitive than others, and accidents happen.

If you breathe in insecticide, you might experience mild irritation that goes away when you get in fresh air. If anyone experiences difficulty breathing, coughing, vomiting, stupor, tremors or seizures, call 911.

You can also contact poison control for assistance:

  • The National Poison Help hotline number is 800-222-1222. Operators can connect you to your nearest poison control center. The hotline will provide expert assistance 24 hours a day, seven days a week, free of charge.

  • Contact animal poison control at 888-426-4435. The hotline is available 24 hours a day, seven days a week. A consultation fee may apply.

Hives, skin irritation, redness, and burning sensations are some of the more common skin reactions.

If you believe you have been poisoned by bug spray or insecticide, immediately call for help. Have the age and weight of the person exposed, the name of the product, and the amount of time the product was inhaled or how much, if it was swallowed.

Insecticide Safety

Insecticides get into the body in three ways: through skin, breathing it in, or through the mouth. When using insecticides, be careful to wear a mask and don’t touch your skin. It’s easy to get a little on your hand then wipe a sweaty brow and spread it. 

To avoid exposure:

  • Store insecticides in their original containers out of reach of children.

  • Never use your mouth to clear the nozzle or siphon a product.

  • Don’t eat, drink, or smoke in the treatment area.

  • Wash hands and clothes after using the product.

The safest way to get rid of bugs without having to apply insecticide yourself is to hire a local insect controller. They can take care of the bug problem once and for all, while keeping you and your home safe.

Frequently Asked Questions

A study from Allergy, Asthma, and Clinical Immunology journal has shown that some people can have severe allergies to DEET, an ingredient found in many bug sprays. Symptoms of a bug spray allergy include persistent itching, redness, hives, and skin swelling. If any of these symptoms occur, stop using the product immediately and seek out medical help.

One way to keep pests away is with good housekeeping. Keep ants away with a clean kitchen. They’re less likely to wander in looking to score some free food if there isn’t a mess to find. Wipe down counters, don’t leave dirty dishes around, and keep food in air-tight containers. 

Home and yard maintenance can also keep pests away. Seal windows, patch any holes or cracks, and put screens on the vents to prevent bugs, rodents, and other uninvited guests from coming in.

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