Rinse well after drinking, by filling bottle halfway, put thumb over top, shake, rinse again.
Inspect bottles returned from friends, soak in oxyclean if any have residue.
Bottling, night before, run thru sink, warm water Oxyclean thumb shake, rinse 2x, then to dishwasher, no dtergent, on sanitize rinse and heated dry.
My bottling setup is convenient to reach into dishwasher, fill, set on counter for capping.
Sanitize caps in StarSan.
It works for me.
I found a bottle brush ineffective in cleaning yeast residue by observing the process with clear bottles. Oxyclean soak is best if someone leaves the yeast layer in your bottle... it slides out like a brown wad of snot, yuk. Brush doesn't clean the bottom of the bottle.