We have the same persistant Ant problems here ATM, disruption of their trail holds them at bay for a few days but they just keep coming. Tonight they had found their way in to the microwave.
I always have a bedtime hot chocolate drink, why not cook the little suckers at the same time....
1 minute in the microwave at full power while my HC heats up should cook the buggers.
You wouldn't believe it, after a minute on high, the little mongrels were still strolling around inside as though nothing had happened, I suspect these little suckers could withstand a nuclear blast....