Use in time after dilution in proportion of 1:3-10. Divide the product into [acid-alkali resistant spray pot] and spray it on the dirt, wait for 30 seconds for penetration, then dry it with [towel]. In case of stubborn stains, it can be used repeatedly to clean. Or cooperate with [interior decoration cleaning gun], [nano magic sponge], [interior decoration brush], [multi-functional detail brush], [carpet brush] use effect better.