How do you clean burner liners for electric stove top?

I use a scrub sponge with barkeeper's friend.

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1. Place the drip pans in the sink in very hot water and let soak for 10 minutes.
2. Drain the water from the sink and pour in distilled white vinegar to cover the baked-on food and grease. Let them sit in the vinegar for 30 minutes.
3. Next, don’t drain the vinegar, but sprinkle baking soda on top of the vinegar and use your fingers to rub the baking soda into the burnt-on crust.
4. Let the baking soda and vinegar work on the stains for at least 15 minutes. You may notice the burnt residue start to flake away.
5. After about 15 minutes, rinse the drip pans with hot water, apply more baking soda and really work the baking soda into the remaining stains.
6. Rinse again and towel-dry.