Do MFR grinders kill wisps? Might be a solution for a 'box' full of wisps.
or coating the inside with iron spikes or the like. Wisps generally don't bother me much. There's a block that collects up all the trades for a village into one interface (forget what it's called), so I just stuff all my villagers into a breeding building. It's the thaum-caused rain that drives me batty. So I usually just absorb all the nearby nodes into a massive pure node (that's quite a chore, but worth it to me). Force mitts are