Houston Bee Removal
I have to assume that the nest is hidden, and the bees are swarming around a crack, indicating the nest is inside the eaves.
If that’s the case, then spraying a liquid from a distance isn’t going to accomplish anything. And I wouldn’t recommend it anyway, even if I knew of a product you could attach to a water hose. It’s extremely dangerous and irresponsible to spray that much insecticide willy-nilly.
If the bees aren’t getting in the house, leave them alone, even if they are nesting and swarming in that area.
If they are already entering the soffit thru an opening depending on the time frame of them being in there , the beehive must be removed and area bee-proofed. If not more bees will get in there and start a new hive due to the pheremones and honey smell.