Do you know what those weird shaped things are? I can tell you they work great! They are the Squeezit Multi Purpose Tube Squeezers. I’ve been using mine for about a month now. No more rolling up the toothpaste tube as tight as possible to get the last bit out. This device can easily reduce waste. The company says it can be used with many collapsible tube products other than toothpaste. Things like cosmetics, lotions, gels, creams, adhesives, paint in a tube and more. They are convenient & easy to use, just slide the end of the tube into the Squeezit. I found it easiest to use once I had used some of toothpaste in the tube. And of course, Squeezit is reusable. On Amazon they sell them in packs of 2, you receive 2 packs of 2 for a total of 4 tube squeezers for about $8.00. Roughly $2 each. But look at other choices on Amazon because there are many other options. The only one I bought and used was the Squeezit, but the others look similar, but not may work as well.
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