when i received my most recent condensor microphone (rode nt1000), it came with a silica gel pouch in the carrying case which i immediately lost. i read in the manual that this is used to absorb moisture that may have developed on the capsule as a result of spitty singing/humidity etc. I was just wondering how important it is that i have one of these things with all my condensor mics at all times. i mean, is it like cleaning the tape path after each use or more along the lines of an occasional precautionary measure? thanks.