A car wash will knock down the dirt, if you have a lot of midges or you "met" something more serious than midges on the highway, get ready and have a sponge with you to rub the body, there is not enough water pressure to remove the "animals" from the body without friction with brushes or a sponge.
Conclusion: if it is in the dust or after rain, it will do.
If after serious speeds and with a lot of insects, go straight to a regular car wash, where a person will do everything for you for money. In terms of money, +/- will be the same...
All of the above is purely my personal opinion.
Good roads to all!
When there was no water in the city, our organization helped them connect the water, they washed without problems for money, of course, a few months later, when there were a lot of customers, they stopped letting us wash, they say that a lot of sand remains from us (freight transport) often has to be pumped out.
Old terminals. There is no 'pause' button after applying the active shampoo. There is only a "stop" button, after pressing which all deposited funds (token) "burn out"