How dirty is too dirty?
Rinseless washing is for light to moderately dirty vehicles, but what is light to moderately dirty?
Light dirt/dust would be descirbed as a very fine film/mist of dust/dirt over the paint of the vehicle, usually accumulted from being parked in a shed for a couple weeks.
Moderately dirty would be described as a slightly thicker layer of dirt/dust over the paint of the vehicle that's accumulated from being in a shed, or perhaps the vehicle has been kept outside, but hasn't been rained on or driven in the rain.
If your vehicle has been driven through the rain, or over roads with water, mud etc on them, then we recommend using our normal washing method with a hose and bucket method. This is to minimise the chances of inflicting swirls and scratches in your cars paint.