Re: The Best Carb Cleaner
If you "always" run fresh stablized gas and winterize your motor when not in use, you will never have need of carb cleaner.
Since NONE of us do that the market has produced numerous "solvents" to try and clean up our gummy messes.
As noted, Seafoam (which I also occassionally run) is an excellent product used primarily as a "gas additive".
Merc produces a product call "PowerTune" which is sprayed directly into the throat of the carb. Used as directed it is excellent for keeping the carb cleaned out (if it hasn't got totally gummed up yet) and I also use it to void the motors of fogging oil etc when "bringing them back to life" after winter storage - it does a great job of cleaning out the cylinders and exhaust as well.
If you disassemble and soak your carb you have to be careful what you use. All "METAL" parts can be soaked out in (regular) automotive carb cleaner. Plastic and rubber parts (or Marelon - a type of plastic more often seen in OMC carb bodies) will get destroyed if they contact normal carb cleaner.
A safer solution for delecate parts is the cleaners containing isopropal (probably spelled that one wrong) alcohol. If you don't want to spend the big bucks on these "specialty" cleaners, you can grab a 1 dollar bottle of gas line antifreeze, which is exactly the same thing (plus a little benzene). I use this to soak out the jets as well - simply put it all in a jar with a lid on and leave it overnight - takes care of all the cooties.
A "professional" is someone who gets paid for their work - it doesn't necessarily mean they are good at it :)