How I’ve Managed To Controlled Ants In The Greenhouse:
Where there are ants, there are aphids. They have a symbiotic relations, relying on each other to survive; which I won’t go into here- that’s another topic in and of itself (watch for an upcoming post.) So to get rid of the aphids, you need to first get rid of the ants.
A friend told me about this recipe and was skeptical as to whether or not it would work, but it worked beautifully. I like it because it is an organic solution and won’t hurt my plants or fish, and certainly won’t hurt us should some get carried onto a veggie by an ant, unlike pesticides.
You probably have the ingredients in your kitchen right now:
1/2 corn starch (or corn meal)
1/2 confectioners sugar (granulated sugar is too big)
I’ve seen where some people use corn starch and some corn meal. I’ve used both and they both worked for me. The confectioners sugar is used to attract the ants and easily coats the corn starch. For the sugar, I actually use a little less than 1/2 of the mix; just enough to coat the corn meal.
Just sprinkle the mix below around the floor of the greenhouse inside and outside, on the ground along the edge of the greenhouse. If you see any ant hills, place the mix near the opening and make it easy for them to take the ‘food’ back to their colony.
When ants eat the corn meal or corn starch, most will live for a while and take some back to their nest for their friends and family to eat. Because they can’t digest the corn starch (or corn meal), it expands and blows them up from the inside. The Queen and entire hive will eventually get wiped out. It may take a week or two but they will all soon be gone from your greenhouse.