I usually wash my own car (my family does), and the car wash is not clean.
On the weekend, a child shouted "free car wash" and gave a tip after washing.
Car washing in car wash generally depends on the grade, ranging from fifteen dollars, eighteen dollars, twenty dollars and fifty dollars.
The bigger your car is, the more expensive it is.
As for the frequency, it depends on the cleanliness of the owner. Some people wash it once a week (I'm afraid there are not many such people now)
Some people wait until the car is dirty or something happens before washing it. My family is like this.
There is a special car wash soap in the shop. Buy a bottle and use it for a year or two.
There are water pipes in front of every house. First, install high-pressure nozzles and get the car wet.
Then wash it with soap, and finally wash it and dry it, and it will be fine.
Car washing in America is very convenient.
There is another way, go to the gas station to refuel, and there is a car washing line connected, so you can drive the car in, take a trip, and then come out, and the car will be cleaned.
This is machine washing, and many people don't like it, especially those who drive good cars.
I want to know what your portable car washer looks like and how it works.
Therefore, it is not easy to evaluate.
I'm talking about the United States. Other countries are not sure.
I guess it's the same