1. Initially, you have to identify the Roto Rooter discount code you're keen on from this page and click on Get Code, located on the right side of the title.
2. Next, you'll witness the offer code being showcased and auto-copied to your clipboard.
3. Then go back to the shopping checkout page of rotorooter.com, where you can find the promo code box and paste the code into it.
4. In the end, you have to click 'Apply Code' to determine the discount you've received on your current order.