Threads on this before, see thread 103433. Cleaning LPs

I collect old LPs from 2nd hand stores, etc., and clean them before playing and transfer. I have found some gems.
Wash with mild dishwashing liquid soap if necessary, being careful not to damage the label.
Rinse well.
Spray with distilled water and remove tap water (absolutely necessary if one is in a hard water area like I am, and easy to get at the grocery or drug store). A laundry spray bottle is handy.
Carefully pat dry with soft cloth.
Put on turntable and remove remaining dust by following grooves with a small soft brush. (My daughter uses an antique brush made for the purpose back in the Victrola days).
If a record is essentially clean when I get it, I moisten lightly with a spray bottle, and follow the grooves with the sable brush. It is amazing how much dust can be collected. I don't transfer until I am sure the record is clean.
As recommended above, be sure the cartridge needle is clean, and check after each transfer.
Removing dust reduces the amount of crackle. It doesn't hurt to record from a slightly damp record, as mentioned above.

I have two turntables, since I sometimes find the old timers at a house auction, and need the right size cartridge needle.