Product review (4 stars): Easy Off Heavy Duty Works well enough
Fine product, just that you might not need it in the event you melted foil on the bottom of your oven. Try spraying Easy Off Heavy Duty ($5.99). It has Sodium Hydroxide (LYE) in it which will get the aluminum off with a good soak, and a little elbow grease. I returned this part after I got most of it off with cleaner. If you want a pristine bottom then go with this $100 option. This is the after photo. Looks better in person. :-/