Cleaning Chemical Stains in an Oven?

How to remove burned chemical stain from an oven. I had put degreaser all over the inside of the oven to clean. My husband unaware of this turned the oven on and when I noticed it, it was too late to try to clean with out burning myself. It has left chalky like stains all over, and I don't know what else to do. The bad part is that we live in an apartment. I have only tried cleaning it with more degreaser, but it is still "dirty".