Yeah, definitely not rubbing alcohol. Everclear or Bacardi 151 is what I normally see people going for. Some stuff, dbol for example, goes into everclear, no heat, no nothing, just dissolves right in there. Say, winny, on the other hand is gonna leave these snowflake- lookin crystals floating in it. Dunno about letro, never made it. But they say the peg is supposed to be good for keeping it suspended in the solution, especially for long periods.