Let's summarize.
For beer, secondaries are mostly unwanted.
For wine, mead, cider, etc., secondaries are needed to remove the beverage from the lees (yeast and sediments).
Sanitizing is important to prevent infections, but you can't sanitize a surface unless it's clean, first.
Cleaning vessels and equipment that touch your chilled wort, must, beer, wine, etc. is therefore important.
Cleaners and sanitizers are different products with different properties and different uses.
One Step is a cleaner (similar chemical composition as Oxiclean). It may leave a surface sanitized, but neither is considered a sanitizer per se.
A properly diluted working solution of Starsan (1 oz per [EDIT] 5 gallons / 30ml per 19 liters), in small quantities, is deemed safe for human ingestion, as is the foam.
Starsan foam works as well as the liquid. As long as a clean surface remains wet for at least 1 minute with Starsan, or coated with its foam it remains sanitized.
Starsan can be reused for weeks, months even, as long as the pH remains under 3.0 (3.3 seems to be the upper limit). Cloudiness of the working solution does not seem to negatively impact its performance.
This thread pertains to sanitation, so it was posted in the correct forum.
But it could have been posted just as well in the wine making, mead, or cider forum, which may have pinpointed or solicited answers to sanitation methods commonly used with those other beverages. Starsan is fine to use as a sanitizer, as is a K-Meta solution, Iodine/Povidone solution, and perhaps a few others.