If toothpaste is inside one tube then it is necessarily outside of all other tubes.

Unless the tube is also in a tube.

Getting it into the tubes involves a factory, so it’s still easier to get it out.

https://youtu.be/g9aD3BpxEAY

I suspect actually most toothpaste is found dissolved in the water supply.

Of which most lies in large sewage tubes

That is unless toothpaste is also a pile.