Here's one that you might like.
I did some research online and the recommendation was baking soda and if desired add a few drops of liquid Dish soap in each of the dispenser cups
I have used it for over 02 years with Awesome results. If you wash a lot of Glassware be sure to continue to use Jet Dry in your dispenser. Great.
Here's how one Hometalker makes theirs
check this out: https://www.pinterest.com/pin/363806476147688445/?nic=1
There you with an easy tutorial.. https://www.youtube.com/watch?v=EDx7_4Bh3D4
Hope it helps!