My husband and I just had our worst. We had been seeing carpenter ants all evening, the first evening. When we went to put the sheets on the bed, we saw a few more, then more, then more. My husband started digging further kind of under the mattress, and he said "Oh my gosh." Then, "OH MY GOSH!!" The bed was absolutely infested with carpenter ants. Thousands of them.
We have a sleep number mattress in our RV. We had to take the mattress completely apart. Then we had to take the platform that it sits on completely apart. Then we did battle FOR HOURS vacuuming them up, spraying, shaking things out, until we finally went for five minutes without seeing any more. Then we put things all back together. Only then, at 2:00 a.m. were we able to go to sleep.
I thought I might have the creepy crawlies all night, but I didn't. And it seems that we completely defeated them in that night. We saw maybe half a dozen more over the week, but now none. Definitely the worst camping trip ever.