Oven cleaner works too. I used to spray the kit in a plastic bin and close the cover. Smelly & toxic smell. I usually will spray outdoors then cover the lid. Leave it for a couple days and rinse with soap and water and let dry.

I've heard Purple Power also works.

https://www.amazon.com/4319PS-Industrial-Strength-Cleaner-Degreaser/dp/B002HU0R4K?th=1