THIS IS A MUST HAVE FOR ANYONE WHO WASHES THEIR CAR. To be used in a 2 bucket system. Where the grit guard is inserted in a 5 gallon bucket consisting only of water. Another bucket is used containing the quality car wash soap. Soak wash mitt in detergent bucket, gently clean section of vehicle. Agitate mitt in grit guard bucket, once mitt is free from dirt, repeat steps. If the water in the grit guard becomes soiled completely empty the grit bucket and refill it. This method will have you needing to use much less soap, and you will reduce the number of scratches and swirl marks that is produced from washing