Anything that has Sodium Hydroxide (NaOH) as an active ingredient will work. In the UK there used to be a product called "Fairy Power Spray", which was brilliant, and had NaOH as one of its active ingredients. I used it to remove enamel from some old Triang models I had.
I expect NaOH is in oven cleaners too.
However, watch your hands and always wear gloves, it's nasty stuff when concentrated.