Thanks, DeejayDebi! Toda, Alex!
Debi – I live in Israel, so I guess it's similar to the US in respect to lack of bacteria in the air.
Alex – I'm from Tel-Aviv. Till now, I didn't use raw milk, but rather pasteurized cow milk (not ultra-pasteurized - TNUVA's 3% milk in a plastic bag – thanks god they still make it). As for goat milk, I still don't know what I'm gonna do… Where do you get your PC?