The homesteader's approach to pests is to work with nature — first through companion planting and habitat diversity, then with targeted natural sprays when needed. None of these harm soil life, beneficial insects or your family.

Neem oil spray — the broadest spectrum

  • Mix: 5ml neem oil + 2ml dish soap (as emulsifier) + 1L warm water. Shake well before each use.
  • Target pests: Aphids, whitefly, spider mites, thrips, mealybugs, scale insects, caterpillar eggs
  • How it works: Disrupts the life cycle and feeding behaviour of soft-bodied insects. Does not kill bees when dry.
  • Apply: Early morning or evening — never in direct hot sun. Spray top and bottom of leaves. Repeat every 7 days and after rain.

Garlic and chilli spray

  • Mix: Blend 6 garlic cloves + 2 hot chillies + 1L water. Steep overnight, strain through cloth, dilute 1:10 with water. Add a drop of dish soap.
  • Target pests: Aphids, caterpillars, beetles, ants, rabbits, deer
  • Apply: Every 3–4 days. Reapply after rain. Works as a repellent — pests dislike the smell and taste.

Insecticidal soap spray

  • Mix: 5ml pure castile soap (no synthetic fragrances) + 1L water
  • Target pests: Aphids, whitefly, soft-scale, mites, mealybugs on contact
  • How it works: Dissolves the waxy protective coat of soft-bodied insects. Must make direct contact — no residual action.
  • Caution: Can burn plants in hot weather. Test on a leaf first. Never spray in direct sun.

Diatomaceous earth (DE)

  • Apply: Dust lightly on soil surface, around plant bases and on leaves. Wear a mask when applying.
  • Target pests: Slugs, snails, ants, beetles, earwigs, cockroaches — any insect with an exoskeleton
  • How it works: Microscopic sharp edges cut the exoskeleton of crawling insects, causing them to dehydrate.
  • Important: Must stay dry to work. Reapply after rain. Use food-grade DE only.
  • In the chicken coop: Dust in nesting boxes and on roosts to control mites and lice on birds.

Copper tape — slug and snail barrier

  • Wrap copper tape around raised beds, pots or tree trunks
  • Slugs and snails receive a mild electric shock from the copper and will not cross it
  • Lasts years and requires no reapplication

Beer trap for slugs

  • Bury a small container flush with soil level
  • Fill halfway with cheap beer (slugs are attracted to the yeast)
  • Slugs fall in and drown — empty and refill every 2 days
  • Most effective during cool, wet weather when slugs are active

Fermented plant extracts (FPE)

  • Comfrey FPE: Fill a container with comfrey leaves, weigh down, cover with water. Leave 4–6 weeks until fermented. Dilute 1:20 and spray as a plant tonic and aphid deterrent.
  • Nettle FPE: Same process with stinging nettles. Rich in nitrogen and silica — strengthens plant cell walls, making them less appealing to sucking insects.

Quick reference — pest to remedy

  • Aphids: Neem oil, soap spray, garlic spray, companion planting (nasturtiums as trap crop)
  • Whitefly: Neem oil, yellow sticky traps, soap spray
  • Spider mites: Neem oil, increase humidity, soap spray
  • Caterpillars: Hand-pick, garlic/chilli spray, encourage birds
  • Slugs and snails: DE, copper tape, beer traps, hand-pick at night
  • Ants (and aphid farming): DE around base, coffee grounds, cinnamon
  • Scale insects: Scrub off with soapy water, neem oil follow-up
  • Mealybugs: Dab with rubbing alcohol on a cotton bud, then neem spray
  • Fungal issues: Baking soda spray (5g per litre + soap), improve air circulation