We have a dreadful ant problem here, the soil is sandy and ants and their nests are just a fact of life. For the most part, we have to ignore them, unless they are invading the roots of something. We have 10 compost bins, and many of those get nests. Again, we leave then be, they swarm eventually, and a side 'benefit' is they do make the compost nice and fine! I do leave the lids off too, sometimes, and let the birds pick them off.
Hello Again Tina,
I have just had check on my 2 composting bins, and as previously stated, the one I am currently filling has no sign of ants, as it is too moist & yukky inside. The other has a thinnish layer of soil/compost, with some damp shredded paper inside, and does not appear to have any ants inside. There are however, other species, going about their business. My other bin is probably a few weeks away from being full, enabling me to start on the 2nd one proper. One thing I have noticed about the Ants, is that I have 4 raised beds, all covered with Enviromesh fine netting, One has a row of Peas & Broad Beans inside. Whenever I go inside to add further support to the stems, I always disturb ants inside the Beans, never the Peas. The Beans are not swarming with them, neither are they being eaten, but it is annoying.