On our last trip out with the trailer we noticed a bad odor inside but couldn't identify it's origin. We thought it had something to do with the black water, but it was empty. We even tried to flush out the black water tank by running water from the toilet straight into the black water tank.
Around dinner time we started getting ready to grill some sausages. My husband opened the microwave door and discovered a grilled cheese sandwich from 4 weeks ago
My brother-in-law heated up a sandwich for his kid and forgot about it, and so did we.
It was covered in bugs and their babies - yuck! I will spare you the details of what happened next, but ultimately we decided it was not possible to completely eradicate the infestation without removing the microwave.
Our trailer is now bug and microwave free. On the plus side, we didn't really use it much and now we have extra cabinet space!