What was it last year, white faced hornets inside the house or just outside on the house structure? They are nasty if you disturb them near their nest. Very painful stings too. Might be the most painful I've had. They just aren't as nasty as yellow jackets away from the nest. A yellow jacket will sting you pretty easily away from the nest...it's like they are just happy to be azzholes and sting for the hell of it...most other species of bees, wasps, and hornets wont bother you too much away from the nest.