ORIGINAL: Tired Old Man
One of these in the fuel can and one in the gas tank and you won't have anything contaminating your gas again. Change them once every year or two.
I heard this recommendation from you then Jody....and a few other seasoned gas engine people recently. I now use these as my clunks. My local hobby store stocks/sells them for only $2. I was amazed. I also use a final filter before the carb. My Jersey fueler gas can has a ceramic clunk and then one of those see-through gas filters. I have 4 filters between the gas pump and the carb. I think that's enough.