Yeah, humans did not create and cause the destruction DDT wrought on our bird population. <that's sarcasm>
how many people should die to save a bird?
DDT, when properly used, can and has saved many millions from malaria and other insect born disease. It does not, when properly used, have quite the drastic effects ascribed to it by R Carlson et al.
I think I'd worry more about pedestrians getting hit by cars than birds, but then, we each have our own values. It seems to me that humans should have a place on this world, too.
I also believe sarcasm and cynicism tend to warp judgment and produce questionable conclusions. FUD mongering should be despised (IMHO)
If you have mice nesting in your RV, you are going to have a problem whether or not they die there. I'd agree with those who think trapping and disposal is preferred near human habitats as that can reduce the problem, but you still have debris and mouse waste as contaminants in places that can be hard to clean out.
Now, if you really want to protect birds, you need to get after cats hunting near back yard feeders ... ;-)