Egging

Eggs are capable of causing damages when thrown at property, and egging is considered vandalism in addition to many other severe crimes. Eggs can break windows and, when thrown at cars, can dent a body panel or chip paint where the shell breaks, leaving an oval outline. Egg whites can degrade certain types of vehicle and house paint. Whether or not the egg damages the surface beneath it, dried egg can be difficult to remove, and removal attempts with scrapers or abrasives can damage the surface. In addition to physical damages to property, egging of property may spread diseases. This may infect the victim and possibly many victims with E. coli, salmonella, other viruses, and more.

Question: is it illegal to throw eggs at someone's house
Answer: yes