This is thoroughly answered here. Also to know is, how does a downy ball open?
Push the top of the Downy Ball down, so that you can pour the Downy in. During the rinse cycle, the spinning action of the washer will open the ball and release the Downy Fabric Conditioner.
Also Know, can you use any fabric softener in a downy ball? Although it says "Downy" in its name, you don't have to use Downy fabric softener in it, although the fill lines are premeasured for that brand. Instead, it can be used to dispense any type of liquid softener in your washing machine at the right time.
In this manner, can you put a downy ball in a HE washer?
No—the Downy Ball only works in top-loading—non-HE, or non-high-efficiency—washing machines.
How do you fix a fabric softener dispenser?
Add enough warm water to cover the dispenser. Mix in a tablespoon or two of liquid laundry soap, swirling it into the water with your hand. Allow the dispenser to soak for 10 minutes or so, touching the fabric softener buildup to see if it has loosened. If not, soak the dispenser for another 20 minutes.