Is isopropyl (rubbing) alcohol adequate for cleaning electrical contacts, or do I need to get some stuff formulated to clean contacts? What's the best way to clean the receptacle/female part of a contact? Stick a Q-tip down there or is there some better way?

Thanks.

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 163k miles
06 E320 CDI "Rutherford", Black on Tan, 182k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 147k mi, frozen wastegate, ALDA delete, boost gauge installed

19 Honda CR-V EX 82k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife