the value brands(store brands,walmart and dollar store type) do not have enough lye in them to effectively strip anodizing. the best one is the original "yellow top" easy off oven cleaner or Draino crystals, some soap shops sell straight lye, but be careful with that stuff it potent as all get out. I've also seen it at the country feed store in 5 lbs bags (what they use it fir is a mystery to me)
