ANTS - costly little buggers

Woke the other morning to discover there was no 240v power in the van. Went to check the pole outside, no, it's fine, back inside to look at the circuit breaker.

the old one

The circuit breaker is inside a small cupboard and when I open it I notice a couple of very small brown ants wandering around apparently lost, I mean, why would they be in here, there's no bread, no sugar and nothing else that they would like.

Wrong.

the new one

The circuit breaker is a nice secluded place to hide where the little brown ants can get in but nothing else can. It doesn't take many of the little buggers to mess with the internal workings of the circuit breaker. They are a sealed unit just to stop us OAPs from playing with them and so they have to be replaced. $99 and ten minutes later, I get to make my toast and coffee. Now I have to spend more money to buy some chemicals to try to keep the little buggers at bay.