Ok folks, time for the monthly Brewers and Vintner’s forum topic.
Related side question: How do you dry your equipment after sterilization? And how long does it sit before you use the equipment?
After use is just general cleaning. Sterilization is always just before the brewing.
Personally, I don't bother with sterilization, I just sanitize the equipment. That's it.
95% of the time, I use Star San. (I will use Iodophor when I bottle, but that's it)
With Star San, there is one basic, fundamental principle: don't fear the foam. Therefore, I will sanitize immediately before I use the item and go from there. On a brew / rack / keg day, I will keep a spare bucket with Star San in it to hold the utensils and hoses.
If I think of it, on my next brew / rack / keg day, I'll post a pic of the worm of Star San bubbles coming out the top of a carboy or a keg.
There is one thing I would point out, though: I generally use a bucket for primary fermentation. You should be sure to pull the o-ring out of the lid of the bucket and soak that separately as part of the cleaning/sanitization process. Then re-install the o-ring after both it and the lid have been sanitized. That way you can get any nasties that may have crept around the o-ring during the last primary fermentation.
The whole process, and it starts with a recently emptied wine bottle, is like this:
1) Rinse and refill with water and let sit over night. Empty and store upside down. 2) Day before bottling, select the bottles needed for the current batch, usually 18 - 750 ml and 6 - 1.5 l to equal the 6 gallons.
3) Soak and scrub in a hot mix of Dawn and oxy-clean. Any recalcitrant labels get attention from a stainless steel sponge.
4) Rinse in hot water and then soak in hot C-Brite solution.
5) Double rinse in hot water and drip/air dry in Fast Rack.
Equipment gets the same treatment except I just seal the conical and store the small stuff in a sanitized and sealed container. Everything is handled with powder free exam gloves. I don't sanitize the corks and have not had an issue yet.