We don’t often talk about grasshoppers or locust but I would say that they would be considered occasional pests. Those pests that accidentally get into homes or businesses. Technically a locust is a grasshopper but not all grasshoppers are locusts. Locusts were once known as the Plague of the West and will eat almost anything in its path.
Keeping windows and doors shut will keep them out along with repairing window screens.