Oven cleaner does work, but other methods work just as well...some of which are less of a mess. More importantly, there's some controversy about the effects that caustic oven cleaner can have on the carbide binders on a saw blade. I don't bother with oven cleaner at all any more. I find many household degreasers work great....409, LA's Totally Awesome, Goo Gone, Fantastic, Greased Lightning, etc. Boeshield's Blade n Bit cleaner works great too but costs a lot more.
FWIW, Freud suggests a kerosene soak for stubborn pitch. I've heard of others using electrosis, TSP, Washing soda, and others.