Start with the activity, not the invoice label
Service businesses often classify emissions based on how a bill looks rather than what actually happened. Water, outsourced waste, courier deliveries, and business travel all sit in different parts of the inventory even if they show up as simple operating expenses.
A cleaner approach is to ask three questions for every line item: did we burn fuel or leak gas ourselves, did we buy electricity, or is this upstream or downstream activity? That framing keeps Scope 1, 2, and 3 classification aligned with ISO 14064-1 and the GHG Protocol.
Common service-sector mistakes
Transmission and distribution losses from purchased electricity are Scope 3, not Scope 2. Water supply and treatment are also typically Scope 3 because the emissions occur in the utility value chain rather than on your site.
Business travel is Scope 3 Category 6, and employee commuting is Scope 3 Category 7. If a technician drives a company-owned vehicle, that fuel is Scope 1 instead. The ownership and operational control test matters more than who submitted the expense claim.
A practical rule for pest control and facilities teams
For pest control, fleet fuel, refrigerant leaks, and direct fumigant releases usually sit in Scope 1. Purchased power for offices, warehouses, and charging sits in Scope 2. Staff commuting, purchased chemicals, outsourced laundry, waste hauling, and courier shipments normally fall into Scope 3.
Once the classification is stable, you can focus on reduction priorities. In many field-service businesses, vehicle fuel dominates first, then purchased chemicals, then travel and utilities.