I would use WHITE chalk not colored and draw a line around the ants will not cross the white chalk line.I have 3 tubs going of the mealies, beetles and pupae and am now invaded with ants! I found a bigger tub and set the worse invaded tub inside with water moat to keep any others out and DH and I killed as many ants as we could. Now I have to find 2 more bigger tubs to put the others in. I suppose setting them next to the wall was not a great idea but they like the warmth coming in.
Anyone have any other ideas to keep the ants out of my mealie bins?
I am hearing of a lot of other people fighting ants this year of many different kinds. So far the fire ants haven't popped up as badly as in past years but I know those are coming. But ant invasion in people's homes are what I am hearing a lot of.
I would also use peppermint essential oil. Place the oil on a cotton ball rubbing it around the entry ways and/or put the cotton ball in the window seal and leave it sit there.
I have to say this is a very interesting thread...I am learning alot about mealworm farming and I am getting my supplies in line to start my own.