Spider Mites are Attacking

Went to pick up the trailer yesterday and noticed it had a bunch of the little red spider mites on the outside. For the summer, we are parking in a paved lot that is much closer to home and easier to access.

Everything looked good until now. I looked at another trailer and it also had the mites. I guess the parking lot is home base. I brought the trailer home and washed it down.

I previously had a issue with ants climbing up the power cord and into the trailer. I would spray the cord with ant spray and the problem was solved. I am thinking I could spray the tires and hitch jack to keep them off when I return the trailer to the lot. Any spider mite spray recommendations?

Thanks