The two channels can reach similar prospects, but they operate under different economics and control systems. A useful comparison starts with what the business is actually buying and what stops when spending or maintenance changes.
Paid search: the business pays for ad exposure or lead opportunities within the rules of the specific advertising product. You can control budget, geography, campaign settings, and landing destinations, then pause or change campaigns when demand, staffing, or economics change. Visibility from the paid placement depends on the campaign continuing to run and remaining eligible.
SEO: the business invests in improving its website and local organic presence so relevant pages and business information can be discovered without paying for each organic visit. Typical work can include technical cleanup, service-page improvement, useful location content for genuine locations, internal linking, local business accuracy, and legitimate authority development. None of those activities guarantees a specific ranking.
For pest control, both channels may reach homeowners or property managers with urgent or planned service needs. The right comparison therefore is not paid versus free traffic. It is immediate controllable acquisition versus slower development of owned search assets, measured against lead quality, service capacity, and total acquisition cost.
Local Service Ads can also sit alongside traditional paid search where the product is available and the business is eligible. Treat them as a separate paid acquisition option with their own rules, economics, and lead-quality data rather than assuming they perform the same way as standard search ads.