After replacing my rear brake pads and rotors, I had some slight squealing in reverse and when applying light pressure going forward, but silent the rest of the time. A mechanic friend turned me onto the Permatex product so I took the brakes back apart, sprayed the backside of the pads, re-assembled and now all squeaks are gone! Could have saved myself a lot of time by using this spray during initial assembly, which I will be doing on future brake jobs.A couple things to keep in mind. First the spray does have a blue color, so spray on paper or cardboard to protect your floor. Second, only spray the back sides of the brake pads, never spray the side that contacts the rotor. Finally, the directions say to let dry 10 minutes before re-assembly, but I would recommend longer so they aren’t tacky. If you have time I would spray the new pads the night before and let them dry overnight. A little pricey for the size can, but does work as advertised, so overall a great product.