Understanding "the hole"

Every tank we clean requires an additional hole for us to fully clean it.

Explaining why the hole is required is the hardest think to do.  Honestly it's easier to actually clean someones tank than it is to get them to understand why we have to drill a hole in their tank.

If you want us to clean your fuel tank we're going to have to put a very small hole in it somewhere.  No two ways about it people.  Please understand that cleaning tanks is what we do.  We're really good at it and we know what we're doing.

We have to put a very small hole in your tank to clean it.  PERIOD!!!

Now with that out of the way let's get to why the hole is required.