- Zeta 4 wash is a concentrated cleaner and deodorant solution for large surfaces. Applications: - Zeta 4 wash contains a cationic and nonionic, surfactant-based agent that cleans deeply without damaging materials like rubber, wood, porcelain, ceramic, enamel and metal. - Zeta 4 wash is over 90% biodegradable, non-foaming and fermentation-inhibiting. **For further product information, please contact Chat Support**