There are ways to prevent roach infestations in the first place. These insects can be tough to get rid of, so it's ideal if you can avoid this situation altogether.
If you leave food out in the open or don't empty the garbage frequently, roaches will be drawn to your camper.
The next thing you can do is make sure there is no easy entrance into your RV. Carefully examine your RV exterior and look for any flaws or weaknesses in the surface.
Try spreading baking soda near possible entrances. You can also use oils like peppermint, cypress, and citrus. Roaches don't care for lemons, oranges, and other citrus fruit, so you can use the peels or even whole fruits as a form of defense.
Despite our best efforts, these bugs sometimes still find their way inside. Once this happens, it's up to you to get them out!
If you're like most people and don't want to touch these bugs, you don't have to! Try using a vacuum to suck them up.
Do a thorough cleaning of your RV. Remove all furniture and cargo and sanitize it. If possible, use a steam cleaner on your carpets, fixed furniture items, and other exposed surfaces.
Only use these treatments as a last resort because overusing them can damage your RV and your health. You can also set out roach traps, but these need to be emptied frequently.
If nothing else is working, consider calling a professional exterminator. These are trained professionals that know how to get rid of roaches in a camper.