I've been using the spray repellents whenever we stay anywhere for over a week. It was recommended to me many years ago to use Bayer Home Pest Control spray but we now use the cheapest of the similar products as they all seem to be formulated similarly and have basically identical bug repellent characteristics. Indoors, they claim to repel bugs for 12-months and outdoors for 3-months.
I spray liberally around the perimeter of the coach and all areas where it would seem susceptible for bug intrusion. I spray the ends of the slides under the awnings every week. I've never brought bugs inside when bringing in the slides. I used it in all part of the country.
The spray is non-staining so you can spray liberally. Safe for pets once dried. Odorless, not oily, and does not discolor fabrics so spray away.
The last product I bought on sale and am still using it, it's the Ortho product, Ortho Home Defense but the cheapest is usually Spectracide Bug Stop Home Barrier that you can pick up at Home Depot for $5.97 for a gallon spray. (go HERE
) ...it may be a few cents cheaper at Walmart.
The only time it didn't work is when we were in the desert and had ants inside after spraying a few days prior. I then sprayed everyday for four days straight and after that was ant free for the next two weeks.