1. Duplicate the Delta Sonic's discount code you desire from this page and click to get code.
2. You'll observe the offer code being displayed and automatically copied to your clipboard after a single click.
3. The next thing to do is to go back to deltasoniccarwash.com, enter the shopping settlement page, and paste the promo code that was copied just now.
4. Ultimately, by clicking 'Apply Code', you will be able to see the discount amount on your existing order.