Structure the account around which truck answers, not around your service menu
Campaign structure should match dispatch reality, because dispatch reality decides whether a click can become revenue.
Most plumbing accounts are built from the service list on the website. Drain cleaning, water heaters, sewer, repipe, fixtures. The list is fine for a menu and wrong for a budget, because those jobs are answered by different people with different equipment and different availability.
Sort by the truck instead. Work that needs someone tonight sits in one set of campaigns. Scheduled work that can wait a week sits in another. Sewer work needing a camera, a jetter and possibly an excavator sits in a third, because only so many of those run in a day.
The split gives you controls that mean something. Pause the emergency campaigns at nine at night when the on-call tech is already committed, and leave the scheduled campaigns running, because a water heater quote can wait until morning.
It also stops the cheapest clicks from eating everything. Drain cleaning searches are plentiful and inexpensive next to sewer replacement searches. Left in one campaign, they will spend the budget before the expensive keyword gets an impression.