Houseplant hacks: do eggshells deter fungus gnats from laying eggs?
It sounds thrifty and natural, but kitchen waste won’t help. Here’s what will
The problem
Fungus gnats are one of the most annoying houseplant pests because they seem to appear out of nowhere, hovering around the soil and your face with equal enthusiasm. One internet fix suggests crushing eggshells and adding them to the compost to keep the gnats away. It sounds thrifty and natural.
The hack
The theory is that a layer of crushed shell will stop adult gnats from laying eggs and maybe even add a little natural fertiliser to the soil. It’s also the kind of hack people love because it recycles kitchen waste.
from The Guardian https://ift.tt/OQFoDiY
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