Ditto on the spray the ground around your tires and all supports.
A "food" hunt is also required.
They are in there for a reason (water or food).
I used a flea bomb over the winter when I saw ants getting in a seam that had come open around my cap. Repaired the seam and the flea bomb worked on the ants.
Lou, Laura, & Freya the wonder dog
2008 GMC Sierra 3000HD Crewcab SB Allison Duramax
2019 Flagstaff 8529FLS - Pullrite 3300
HAM CALLSIGN - KC3FFW