I know we've talked about this before, but I need some remedial training or something

. I feel like sometimes my pee pads still smell a little pee-ish after I wash them, and I'm wondering if I'm doing something wrong. Maybe I'm over-packing my washer...would that hurt the washing ability in a big way?
Anyway, I use detergent, borax powder, and some vinegar when I wash...and I use warm water. For those who have a good regimen going, what are you using and how much of each ingredient are you using (ie, how much vinegar etc)?