Generator Invaded By Ants

I am about to start generator maintenance open the lid and see lots of ants near the control panel. The homeowner runs out and buys an ant killing spray. I spray around the control panel and then remove the control panel only to see the controller is completely infested with ants. It even looks like there are lots of ant eggs in the controller. I spray the controller down with ant spray and kill off all the ants. Then I dry the controller using nitrogen put it back together and test the generator. After that, I do my annual maintenance on the generator