Im having an ant problem in my tunnel, they been there since I put the tunnel up. I have sat and watched then mincing up and down the tunnel but cant track them to a specific place (nest) But they are becoming a real pain as they seem to of taken a liking to my pepper leaves. Some of the leaves that touched the ground or the side of the tunnel seemed to be most effected with them munching, I cut back a few leaves that were in contact with the ground or sides and the munching on leaves wasnt so bad, but seen as the peppers are growing more mucned leaves appear but not on my toms and they are bigger and more accessible to the ants, but they havent taken a liking to the toms.... I noticed in the garden centre ant powders where not recommended for crops, such a pain in the a**e!!!!
(My recent tsunami did nothing either, infact the ants told me it was better then the log flume at alton towers!!!)