Downy Unstopables is meant to give clothes a fresh smell that's supposed to last for up to 12 weeks to give your clothes and laundry a fresh smell for those 12 weeks.
To use Downy Unstopables you Shake as much of Downy Unstopables laundry scent beads into the cap and then toss it into the washing machine drum at the beginning of the wash cycle before you add the clothes to the washing machine.
Then after putting the Downy Unstopables into the washing machine you can add your clothes, laundry detergent and if you wish some Fabric Softener.