The safest pesticides for your home, ranked by pest control experts

• Pesticide safety is indicated by signal words like "Caution," "Warning," and "Danger" on the product label.
• Biopesticides are considered the safest option, while organophosphates and carbamates are the most toxic and require professional handling.
• Even natural pesticides can be harmful if ingested or cause allergic reactions, so always follow label instructions.

Pest problems can be big problems. Some are small and simple to solve, like a few ants on your kitchen counter. Others may call for a more aggressive, professional approach. You’ll want the best pesticide for the job with the least safety risk to you and your family.

Keep reading to learn which top pesticides are safest, plus expert advice on choosing the best methods.

How pesticide safety is measured

Every pesticide on the market has a U.S. Environmental Protection Agency (EPA) registration number. This means it has been evaluated for ecological and human health risks, assessing factors like reasonable risk to the environment and wildlife, human toxicity and exposure limits.

Chase Woolsey, founder and licensed technician with Solera Pest Control in Houston, says this means the product has minimal to low risk when you use it as instructed. But it’s not a general safety rating. If he had to point to one safety measure for homeowners, he would highlight the signal words Caution, Warning and Danger. 

“Most people skip past this, but that single word tells you toxicity levels at a glance. Caution is the least harmful, while Danger means it’s restricted and rarely sold to the public,” he says. 

6 top pesticides ranked by safety 

Brandon Runyon, entomologist at Swat Pest Management based in Indiana and Kentucky, says that the most organic options aren’t always the safest. Also, any pesticide on this list can be dangerous when you don’t follow the label’s safety precautions.

Below are the top pesticides ranked from safest to most harmful — when used according to the label. When dealing with chemicals of any kind, always keep them away from children and pets.

1. Biopesticides and biological controls 

Most common pests targeted: Flies and mosquitoes

Woolsey says these products use living organisms and naturally occurring microbes that target one type of pest. They’re low risk for people, pets and non-target pests. Plus, he says they break down quickly in the environment, which is why they’re the gentlest option on this list.

The trade-offs? They work slower than other options and are pest-specific, not general purpose.

2. Boric acid and silica-based treatments 

Most common pests targeted: Mosquitoes, cockroaches, ants, silverfish, fleas and bedbugs

This category is one of the oldest pest control tools still used today because they’re effective and low risk, according to Woolsey. “Silica dust damages an insect’s outer shell, while boric acid disrupts its digestive system,” he says. 

It isn’t toxic when touched and doesn’t affect the nervous system like some other pesticides. But Runyon warns it can be toxic to humans when swallowed, so store it away from food and the reach of children.

3. Botanical and natural pesticides 

Most common pests targeted: Ants, cockroaches, fleas, aphids, scales, beetles, caterpillars, flies and wasps

These products contain pyrethrins, which come from chrysanthemum flowers. Woolsey says these plant-based pesticides surprise most people because they sound harmless, but they’re actually fast-acting nerve toxins to insects. 

He says they break down quickly in sunlight, but often require frequent application and can cause allergic reactions in humans. Runyon adds that eating these products can cause nausea, vomiting, tremors or seizures.

Other natural pesticides — like insecticidal soaps or essential oils (rosemary, thyme, peppermint) — may also cause allergic reactions in humans and are unsafe to swallow, says Runyon. But he recommends them for soft-bodied insects, like garden-variety aphids and scale insects.

4. Synthetic pyrethroids 

Most common pests targeted: Mosquitoes, ants, cockroaches, fleas, ticks, termites, aphids, beetles and caterpillars

These lab-generated alternatives to natural pyrethrins last longer in sunlight and moisture and have low immediate toxicity to humans, explains Woolsey. He says they’re a more stable option, which is why they’re a popular active ingredient. 

Unfortunately, they’re also highly toxic to pet cats or fish (say, in a garden pond). Runoff and pet exposure are his main concerns.

5. Neonicotinoids 

Most common pests targeted: Aphids, whiteflies, beetles and fleas 

Woolsey explains that neonicotinoids work by targeting receptors found mostly in insect nervous systems. They’re effective at low doses and are less harmful to humans and pets (though there’s some recent concern, according to the National Toxicology Program).

However, they have a higher environmental impact on waterways and pollinators, like bees. “Precision in application really matters here,” he says, emphasizing professional handling.

6. Organophosphates and carbamates 

Most common pests targeted: Aphids, roaches, termites, houseflies, lice and crop-destroying insects

This major pesticide category contains acetylcholinesterase inhibitors, which block the breakdown of nerve signals, says Runyon. These products are highly regulated, and professional application is essential, according to Woolsey. That’s because they’re highly toxic to humans and pets.

Key safety takeaways for homeowners

Runyon and Woolsey gave three key tips for homeowners when using pesticides:

• Follow labels closely: Read the entire label, including fine print, and follow instructions exactly. Most accidents happen when people miss important instructions, like re-entry times or safety precautions.
• Place products carefully: Don’t place products near HVAC returns and kitchen areas to avoid accidental exposure.
• Never combine products: Layering a store-bought spray on top of other treatments can create potentially harmful chemical interactions.

How to choose the safest pest control method for your home 

The best way to choose the safest home pesticide is by matching the tool to the situation, says Woolsey. He weighs:

• Who and what lives in the home, like pets or kids
• How severe the infestation is
• Pest type and behavior
• Where treatments need to go

“A minor ant trail on a patio might call for the gentlest option,” he says. “But a termite colony or a roach infestation calls for something much stronger, applied precisely and in the right spots so it does the job in one pass instead of five.”

When to avoid DIY chemicals and call a professional 

Woolsey says that DIY products are fine for small, contained, low-stakes problems. However, there are several situations where homeowners should call a pest control company:

• Structural damage: Home-destroying pests, like termites, can cause more damage than you can see or treat using DIY methods.
• Recurring issues: If store-bought products don’t work and the problem returns, the infestation could be bigger than it looks and needs professional products.
• Vulnerable beings: Pets, babies or people with chemical sensitivity may benefit from more targeted professional treatment.
• Hefty jobs: Serious infestations may need restricted-use or heavy-duty products only professionals can apply.

Final verdict on pesticide safety

You may be able to handle some pests on your own. When you do, follow the label. “Treat the label as law,” says Runyon. “Tons of research and data go into those labels, and they should be followed to protect yourself and the environment.”

Otherwise, consider paying for an exterminator to rid your home of pests the right way, which is usually the safest way.