Best Organic Pest Control Products

The best organic pest control products start with physical barriers and traps, add biological controls such as nematodes, and use soaps or oils only when needed, so you protect your plants and the bees, birds and pets around them.

Shelves of sprays make it hard to know what actually works. This guide compares the main organic pest control products, explains how to match each to a pest, and shows how to use them safely around bees, pets and edible crops. It’s general information, and your local extension service or the Royal Horticultural Society (RHS) can advise on approved products in your area. Links on this site may earn a commission, and that never changes what we recommend.

It belongs to the Pests, Diseases and Natural Care guides and works with Common Garden Pests: Organic Control, Slugs and Snails: Natural Control and Beneficial Insects.

Best organic pest control products at a glance

These are typical uses. Weather and pest numbers vary, so combine two or three methods and check plants weekly.

How to choose organic pest control products

1. Identify the pest. Check the leaf, stem and soil first, because the wrong product wastes money and can harm helpful insects.
2. Start physical. Fit mesh, fleece or a barrier before the pest arrives, because prevention beats a spray.
3. Add traps. Use sticky traps or beer traps to track numbers and catch adults.
4. Try biological controls. Nematodes and predatory insects work best in warm, moist conditions.
5. Use sprays last. Choose soap or oil, test on one plant first and spray at dusk.
6. Check the rules. Confirm that a product is approved where you live.

How pest products, wildlife and plants affect each other

Insect mesh stops cabbage white and flea beetle reaching brassicas, and fleece protects carrot from carrot fly when set 60 cm high. Ladybird and lacewing eat aphid, hoverfly controls aphid on lettuce, and frog and hedgehog eat slug and snail. Broad sprays kill these helpers along with the pest, so soap works best on a small area. Garlic repels aphid near rose, and marigold repels whitefly near tomato.

Slug damages hosta and lettuce, and gravel or copper tape blocks it on pots. Mulch protects soil and reduces weeds but gives slug cover, so keep it thin near seedlings. Blight attacks tomato and potato in damp weather, and watering the base of the plant rather than the leaves reduces it. Powdery mildew attacks squash and rose in dry spells, and airflow reduces it. A pond within 5 m attracts frog, and a log pile shelters beetle. Your extension service or the RHS lists local pests and safe products.

A worked example: protecting a brassica bed

For a bed of 1.2 m by 2 m with cabbage and kale, erect hoops 60 cm high and cover them with insect mesh of 1 mm, burying the edges so butterflies can’t crawl underneath. Place two yellow sticky traps beside the bed to see whether whitefly arrive. Water nematodes into the soil in spring when it’s above 5 °C if slug damage was heavy last year. Hand pick any caterpillars that slip through, and spray Bt where it’s approved if the numbers rise. Rotate brassicas to a new bed each year to reduce club root and pests that overwinter in soil. After 3 weeks you’ll see far less damage, with no spray on the leaves you eat.

Using sprays and baits safely

• Read the label: follow dose, timing and the interval before harvest.
• Spray at dusk: bees are less active, and leaves are less likely to scorch.
• Avoid open flowers: keep spray off blossom and flowering weeds.
• Protect water: keep products away from ponds, drains and streams.
• Store safely: keep products in original containers, out of reach of children and pets.

Timing organic pest control through the season

In spring, aphid builds up on rose and bean from about 10 °C, so check shoots weekly and spray soap at 5 ml per litre on small colonies only if ladybird and hoverfly haven’t arrived. In early summer, cabbage white lays eggs on kale and cabbage, and mesh of 1 mm fitted by April keeps most of the damage away. Slug feeds hardest after rain, so water nematodes in when soil is above 5 °C and repeat every 6 weeks.

In late summer, red spider mite attacks dry plants, and humidity of 50% reduces it. In autumn, remove fallen leaves within 2 weeks, because old leaves shelter blight spores and slug eggs. In winter, clean pots and canes, and check mesh for holes wider than 2 mm, since a small gap lets pests in.

Which product for which pest

Building a pest plan instead of buying a product

Healthy plants resist pests better, so water at the roots, feed lightly and give each plant room. Check plants weekly, because a few aphids on one shoot are easier to remove than a colony on the whole bush. Planting flowers such as alyssum and calendula brings hoverfly and ladybird, and these predators eat aphids all season. Birds, frogs and hedgehogs also help, so leave a log pile and a shallow water dish in a quiet corner.

Use a product only when damage passes what the plant can bear, and choose the narrowest option that fits, such as nematodes for slugs, rather than a broad spray that kills helpful insects too.

Suggested picks to check

We have not tested these products ourselves. They are suggestions that match the criteria above, so check the current size, specification and price on the seller’s page before you buy.

Related guides

Use this guide with Common Garden Pests Slugs & Snails Beneficial Insects Natural Remedies Prevent Problems Early Garden Hygiene.

Common mistakes

• Spraying before identifying the pest. The product may not work, or may harm helpers.
• Treating “organic” as harmless. Some natural products still harm bees and fish.
• Using nematodes in cold soil. They need warmth and moisture.
• Leaving mesh gaps. Pests find any opening at the edge.
• Forgetting hygiene. Remove old leaves, because they shelter pests and spores.

Next steps

Identify the pest, fit a physical barrier first and keep sprays for the last resort. For common pests read Common Garden Pests: Organic Control, for slugs read Slugs and Snails: Natural Control and for helpers read Beneficial Insects. The Pests, Diseases and Natural Care guides link every step.