Bob, and others who spritz sanitizer on equipment... what are you spritzing, and how long do you let it sit before using it?
I'm just curious what others do. Here is my routine:
I don't like metabisulfite because of the odor and respiratory bite, but I will use it when I don't have to stick my nose in it. I use it mainly to fume sanitize corks, the filters on my Buon Vino Superjet, and sometimes to sanitize bottles (with a vinator).
If I have a fair amount of activity lined up, like stirring wines in primary and checking gravity, or sanitizing carboys or primary fermenting vessels (trash cans), or airlocks and bungs, or auto-siphons and racking canes and tubing, I'll mix up a couple gallons of Iodophor and use that. I submerge equipment in the Iodophor for 2 minutes, then shake off excess liquid and use the equipment, then rinse it and put it back in the Iodophor for the next use. I seldom leave anything in Iodopho for more than five minutes though, as it stains and discolors. If it's a carboy or fermenter, I slosh it about every minute or so to rewet all surfaces for about 10 minutes. I discard the Iodophor when I'm done using it, as it doesn't keep well.
I keep Star San in a spray bottle. I use it for quick spritz jobs on testing and stirring equipment when I don't want to mix up a couple gallons of Iodophor. I wait a couple minutes before shaking off excess Star San and using the equipment. Because it sticks pretty good to the plastic of my primaries and stays wet for long enough to do the job, it is my preferred "spray on" sanitizer for plastic primaries. I don't like it for carboys because of the hideous foam (which I'm not afraid of, just don't care for it).