Gas Tank Cleaning/Flushing

[MPolzin@xxxx]

I'm going to be starting work on another car here rather quickly, and this
one has been sitting with gas in the tank for at least 4 years, so the first
thing I want to do is address the fuel system on this car before attemping
to turn it over.

What is the best method of cleaning out the fuel tank? Just drop and scrub,
or is there any cleaning agnets out there that would assist? Thanks.

Mike