Gtechniq W4 Citrus Foam is a powerful pre-wash foaming degreaser that effectively removes heavy contamination from your vehicle's surface. This versatile product can be used with a Foam Lance, Foam Gun, Pump Sprayer or even by hand. With multiple dilution ratios available, you can customize the strength of the foam to suit the level of dirt and grime. Plus, the non-caustic, 100% biodegradable formula ensures that it's safe for both your vehicle and the environment. Get your car looking its best with Gtechniq W4 Citrus Foam.