I use Ajax, Dawn or Joy to wash my clothes. It's bunches cheaper than Tide. Mix it 7 to 1 (Water/Ajax, Dawn or Joy) in your empty laundry detergent bottle. Pour in 7 cups of water, then add 1 cup of dish detergent. I use the bottle cap to measure just like the Tide.I think this may be worth a try!
I also fill my Downey ball about half full of white vinegar and toss that in. It removes soap build up and softens too.