SONAX Clay Ball For removing surface dirt contamination such as tree sap, rust bloom, insect residue and tar stains from paintwork and glass. Clay pad can be removed for easy cleaning with water. Easily Removes Stubborn Dirt from Paintwork and Glass. Effective Against Tree Sap, Rust Bloom, Insect Residue, Tar Stains • The SONAX clay ball removes surface dirt contamination such as tree sap, rust bloom, insect residue and tar stains from paintwork and glass • Cleans without leaving scratches. It is particularly handy to use with an ergonomic handle • Easy to clean: take off the clay pad and wash under running water