Exclusion of roof at Santa Cruz County building
Working on Whole Foods exclusion of birds.
Poison bait station next to opening in house.

EXCLUSION

Exclusion is the process of preventing animals from gaining access to property.

Exclusion describes repairs made to a structure that prevents animals from getting inside - like rodent-proofing a home. The term can also be used to describe an addition of a barrier of sorts that prevents animals from going under or over a fence, excluding animals from a garden or patio area, for example.

Exclusionary repairs or upgrades can be the permanent solution to most wildlife conflicts, from mice to mountain lions, because it prevents them from accessing what they want - food.

COST COMPARISON

Wildlife conflicts are not resolved by removing the 'offending' animal(s) because new individuals quickly fill the vacancy.

1 - 1 = 1

This is why any strategy that focuses on removal of the animal(s) will fail in the long run, and be more costly.

For example, let's say there's a building with a few breaches on the exterior, allowing rodents or small mammals to gain access. No amount of poison or trapping and removal will resolve the fundamental issue - the holes in the structure.

If you take that example and look at the possible costs over time, investment in the repair of the building is by far the most economic.
Table comparing trapping and poison vs exclusion