I am a slow DIY'er and tend do things over a longer period. I need to do some caulking. I won't be able to use much. So I want to preserved the opened caulk. How can I do this reliably over a very long period? With silicone, I can just wrap the whole tube in cling film and put it in the freezer. Can I do the same with non-silicone caulk? I plan to use this caulk: https://www.screwfix.com/p/no-nonsense-exterior-decorators-caulk-white-310ml/9735h