Liquid Plumr is on sale for $3.99 at Rite Aid this week. Stack a $0.75 printable coupon with a $1.00 Checkout 51 rebate. Pay just $2.24!

Use one $0.75/1 Liquid-Plumr product (clorox.com)

And submit $1.00/1 Liquid Plumr product, via rebate app (checkout51.com)

Pay $3.24, Submit for $1.00 Checkout 51 Credit

Final Price: $2.24