BG Stop Squeal eliminates annoying, whining, or squealing brakes. Brake noise can be caused by: Loose or worn brake pad components vibrate Excessive friction from stuck brake calipers As part of the BG Stop Squeal Service, BG Stop Squeal is a safe and effective product for eliminating or preventing brake noise by infusing the brake pad with ingredients that reduce sticking between the pad and rotor. When pressure is applied, the vibrations are significantly reduced, thus brake noise is stopped.