Ants: wash or spray surfaces with vinegar. Sprinkle chilli, salt or peppermint as a barrier.
Cockroaches: leave a sugar-borax mix in trays. (Borax is poisonous; keep trays out of reach of children.) Spray cupboards with a mix of vanilla essence and water, or scatter bay leaves. Make a trap from a half-full glass of beer with the inside walls greased.
Flies: use flyscreens and swatters. Add peppermint to pot-pourri.
Mice: scatter mint, wipe surfaces with peppermint oil. Use mouse traps.
Mosquitoes: burn citronella candles. Plant sweet basil. Avoid stagnant water in the garden.
Moths: camphor wood balls, cedarwood oil or sachets with a mix of lavender, cloves, mint and/or rosemary in wardrobes.
Spiders: tolerate non-venomous spiders in the house and garden – they eat flies, mosquitoes and other insects.
Weevils/silverfish: put bay leaves in bags of rice and flour.