In each corner of the garden put a dark pot or bucket. Fill it with water. Add a teaspoon of Bacillus thuringiensis israelensis Talc Based Formulation and stir it. Look that rain is not falling inside. Put it into the shadow.
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Sprinkle some diatomaceous earth wherever the bugs walk around. It scratches their bodies and they dry out. Works agains ants, cockroaches and more.
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