Special anti-slip agent increases engine power and immediately stops belt squeal without causing a gummy residue! Prevents rotting and deterioration even under the most severe outdoor conditions. Extends the life of all belts. Apply while belt is under power. Coat underside of belt until noise stops. Just spray the inner surface of the belt, back and forth, while it's under power and moving. Then spray small amounts on the inner working surface of the belt until the belt is covered. The noise will stop in seconds, resulting in a belt with increased grip.