The first question on a stinging insect call is not how to kill it, it is what it is. Honey bee colonies get relocated. Wasps and hornets get treated. Telling them apart decides the whole job.
Honey bees
Fuzzy, golden brown, and thicker in the body than a wasp. They move purposefully between flowers rather than hovering around food and drinks.
A honey bee colony in a wall builds wax comb and stores honey. That comb is why removal is more involved than spraying: honey left in a cavity ferments, seeps through drywall, and attracts ants, roaches and future swarms.
Live removal and relocation to a keeper is the right outcome where it is practical.
Wasps, hornets and yellowjackets
Smooth bodied, brighter, narrower at the waist. Aggressive around food and rubbish. They do not store honey and do not reuse last year's nest.
Paper wasps build the open umbrella-shaped nests under eaves. Bald-faced hornets build the large grey enclosed football shape. Yellowjackets often nest in the ground or inside wall voids.
These are treated rather than relocated. Yellowjackets in particular defend aggressively and account for most serious multiple-sting incidents.
Carpenter bees
Large, look like bumblebees but with a shiny black abdomen. They drill perfectly round holes about half an inch across into fascia, pergolas, decks and eaves.
The bees themselves do limited damage. Woodpeckers hunting the larvae inside the galleries do considerably more, and that secondary damage is usually what prompts the call.
Treatment then sealing the holes is the sequence. Sealing first traps larvae that chew their way back out.
When it is genuinely urgent
A nest beside a doorway, above a play area, or on a property where someone has a known sting allergy. Those get prioritised.
Buzzing inside a wall cavity that has been present for weeks, because the colony is growing and the removal gets harder and more expensive the longer it runs.
Preventing a return
Wasps do not reuse a nest but they do reuse a good site. Proofing the eave, soffit or void is what stops the annual repeat, and it is worth doing at the same visit rather than next spring.