What's wrong with good smelling carbs
Ninjanut is correct in his concern regarding chemical reactions, especially with the plastic parts, although Pinesol is on the low end of the harshness scale. Certainly less so than carb "dip" like Berryman, etc., but still a good idea to keep an eye on it as it cooks.
An ultrasonic cleaner would be a godsend for this type of work, unfortunately one large enough to put the whole carb bank in is somewhat expensive and may be hard to justify for occasional use. (I found a 10L model on the 'Bay for $120.00, so maybe not so bad?).
The point is that many deposits are a mixture of varnish left over from evaporated gasoline, combined with metal corrosion products like crusty aluminum oxide. These can be easily cleaned out of your jets with the aforementioned wire and chemical products, however if the old gas was sitting inside the machined passages of the carb the deposits may be inaccessible except through chemical means.
Really corroded carbs will require disassembly of the "bank" into separate units, removal of all jets, o-rings and plastic bits, and soaking in the aforementioned carb "dip".
Fortunately, in my experience, most of these passages are above
the level of the float and therefor have minimal corrosion or heavy deposits. Usually a thorough jet clean takes care of 95% of carb dirt issues.