Review on Prepara Evak Fresh Saver, Medium-Tall Airless Canister With Black Handle, 2.3 Quart, Clear by Scott Ramu

This was actually a good product, as are the others in this same style, until I lost down the drain, the ESSENTIAL PART that makes it air-tight.one of the two little silicone buttons in the lid. Beware losing the little silicone buttons in then cap! If one, or both, is lost, the canister will no longer be able to be sealed.The canister doesn't come with any instructions at all, and you must figure out for yourself how to remove the various parts of the top in order to clean it/them. When twisting the top segments to open them, it is incredibly easy to dislodge one or both of the silicone buttons, and if they fall down the drain, the canister is no longer air-tight and guacamole, for instance, will be exposed to the air and will discolor and spoil.I contacted Prepara, the manufacturer, and their customer service said they do not have any 'spare parts' for the canisters-- I offered to buy a replacement button, but they were not helpful.they were just sorry for any "inconvenience".Sorry, Prepara, this was no mere "inconvenience"! The canister is no longer 'fit for purpose' because it is no longer air-tight. I wasn't asking for any 'freebie parts' . I offered to pay. It is a mighty expensive canister without the buttons!I will not buy anything else, ever, from Prepara.