Diatomaceous Earth dusted lightly inside or outside will kill ants, earwigs, cockroaches, millipedes, centipedes, crickets and silverfish usually within 24 hours. It is a deterent of fleas and any creature with an exoskeleton. DO NOT get into your eyes. Don’t apply when windy.
NOTE: Diatomaceous Earth (DE) will KILL earth worms and nearly any type of worm – in various forms it is used as an organic wormer for livestock and humans. So, don’t just dust it over your gardens. Apply locally where you aren’t worried about keeping the worms.
Remember the bomb we made from baking soda and vinegar? This works on ants too! When the ant mound is damp (morning dew or after a rain) sprinkle with baking soda. About a half hour later come back and pour some vinegar on the mound. The ants have eaten the baking soda and now will ingest the vinegar – no more ants!
From the WE2s: “I make a “cup” out of tin foil, put a couple tablespoons of 20 Mule Team Borax and a couple tablespoons of granulated sugar, mix it up and sit it near the back side of my sink. They come in, carry the stuff to their nests and I don’t see them any more that year.”