I use a commercial product called Bakelene. It's a non-alcohol spray that contains starch.
I tried consumer retail products in the past and have not been happy with them.
The Bakelene works like magic. I have an intricate bundt cake pan that was almost impossible to use the old way, spreading the grease with waxed paper. With the spray stuff, it's a simple task and the cake just falls right out without any sticking.
If you can't find Bakelene, try the Pam stuff. It might be an improvement over the consumer stuff I bought a few years ago.
BTW, Bakelene comes in two forms. One for cakes and the other for bread, so pay attention to which one you're buying.