Make sure that your place is clean, because you don't want to have guests come over and you feel judged. So it's always important to get a good housekeeper and get things pretty clean and presentable.
Although she clearly did nothing to earn your business, she did not seem to violate any laws or regulations. If you want to warn others of her antics, you best...
Maybe you can put decorations (like fake spiderwebs or smiley pumpkins) on the hedge. You could also try putting up a sign with an arrow that points to the entrance...
Things like lip balm, candy, toys, drawing notebooks, diaries, hair brushes, hair accessories, or anything like that. You could also try asking them what they want.
