Posted: 24/04/2015 at 13:06
Hi Outdoor girl.
You do not say what type of wormery you have? Is it indoor or out. (I will presume outdoor)
I’m not a huge fan of ants, but I have loads of them on my property, and in most of my various outdoor vermicomposting systems (especially those situated on the ground). Rather than going on a ant-killing rampage however, I’ve opted instead to mellow out about their presence, and put more focus on creating the ultimate habitat for the worms. Thankfully, the ‘ultimate’ worm habitat isn’t all that thrilling for ants.
Ants prefer fairly dry conditions, so if you are keeping your worm systems fairly moist at all times, the ants will be far less likely to set up shop (ie nest). They will still venture into (and out of) the bin/bed, grabbing some food to take back home, but in all honesty this isn’t really something to worry about.
If at all possible, you might think about propping your bin up on legs or a pedestal in a tub of water – basically requiring that the ants (and other non flyers) swim across your moat in order to reach the bin. If it is on the ground then try and increase the water content of the bin the worms love it and the ants hate it.
At a last resort use ant powder around the bin or preferably diatomaceous earth. This should greatly harm any ants that try to cross it, since it is essentially like a field of broken glass for bugs (ouch!).
Let me know what system you have.