Jessica & Sam
You have boxelder bug nymphs, which are the young of the boxelder bug. The nymphs of the boxelder bug have what looks like a yellow spot on the center back of the abdomen. Boxelder bugs do like to congregate together...and they are probably under a boxelder tree or maple.
As expected they feed on boxelder trees, rarely causing any economic problem. They can somtimes be observed feeding on ash, maple, plum, cherry, apple, peach, grape and strawberries, where they can damage the fruit. They are known to be nuisance pests in the fall as they accumulate on the sides of homes. They also seem to manage to come indoors in the fall...which is a nuisance. The time spent in or on our homes, they are not causing a problem.
If these are outside then you really have no problem. When they become a problem in our homes here in the North we just vacuum them to get rid of them.
