For use on fungus gnats and leaf miners.
An all-natural solution for crawling insects, e.g. ants, snails, slugs and any others that get it on them, and is made from the fossilized remains of marine phytoplankton. Purchased as a powder. Dust (carefully, I do not recommend breathing it in) diatomaceous earth on top of soil around plants, at pot perimeter, so insects crawling through will get it on them. Keep it dry to keep it effective. You can purchase 100% diatomaceous earth at your garden center. Some packages state a lesser %. Know what the other % is made up of so you can decide if you want to purchase it.