I always buy my detergent for the dishwasher from Amazon.
I LOVE Cascade Action Pacs and the coupons for them are ridiculously small.
If I hadn’t just bought a giant container I would be grabbing this deal today on the Cascade ActionPacs Dishwasher Detergent Fresh Scent 60-count. 
Be sure to clip the $1 off coupon in the middle of the page.
Then on the right hand select “Subscribe and Save” to get this great price. When you do that they will be shipped for FREE.
Don’t freak out about the subscribe part- as soon as you receive the items you can cancel any future orders. They even send you an e-mail letting you know how.
Amazon prices can change at any moment so hopefully this deal is still available when you decide to grab it!