I once had a problem with smelly arm pit areas on sweaters that I always washed at 40C with powdered detergent and tubmle-dried on high, but the smell somewhat remainded. What I once did was to pour a little bit of pure Dettol floor cleaner straight onto the fabric - just a couple of drops so that the material would get soaked - and put the items aside while the first load was being washed. Worked like a charm and didn't stain anything as the stuff doesn't contain bleach. Cheap, too, because the cleanser comes in a 2 liter bottle.
However, since you're washing at 60C anyway, sanitizing shouldn't be a problem regardless of detergent - unless, of course, you have one of those pesky modern washers that won't reach 60C.
Alex