After moving into an apartment with a non-self-cleaning oven, I decided to give this product a try.  It has really been a life-saver!!!  I cut it down to fit the bottom of my electric oven; I was a little concerned when a couple of scorch marks appeared - but they were from where the bottom element came in contact with the liner.

It just makes keeping the oven cleaning easier.  Once a week or so I take it out and wash it off with a soapy sponge; rinse and let it dry and back into the oven it goes.  It's amazing how much crap accumulates from using the oven!!!!  

Anyhow, I love it and will get another one if and when this one wears out.