Hi C-H's, John (I'm sure Jim already knows this) you can use a straight caustic soda (=lye, =NaOH) in all stainless steel equipment. If any other metals are present you will likely run into problems. It is a great chemical for removing organic deposits in difficult places, but will attack humans too! Think of it as soap x 1,000. It is what the anatomists use for removing meat from bones when they want to mount a skeleton! Be careful! Vessels cleaned with NaOH need to be rinsed thoroughly because it is highly basic (alkaline.) A good practice for S.S. is to rinse and replace with a phosphoric acid based sanitizer. Then your vessel needs only a quick rinse (if at all) before use. If you use NaOH to clean out dirty hot sauce bottles do not leave a strong solution in the bottles for any length of time. (Weeks or months.) If your bottles are that dirty throw them out. Remember that any un-rinsed NaOH solution will give your sauce a terrible taste and will also push the pH up. Not good if you are trying to keep it below 4.2 :) For other materials without stains or organic build up, boiling water is a fast and efficient way to keep the nasties under control. You can boil water IN your sauce bottles in the microwave. Ooops - sorry Jim - I got carried away. You were going to do this! I'll try to shut up now. -- --- Regards, Cameron.