No, not really. I mean, people DO constantly hang out in my yard and house, but I actually like that. I'm happy they love the look of it or feel comfy enough there to keep returning
And I take it as a compliment and enjoy the company and little conversations that start because of it.
That said, ERP is not something I'd want to see there, and it has been jarring coming online only to recieve a /tell "Oh btw, your bed is really comfy, we had a lot of "fun" on it...( ͡° ͜ʖ ͡°)" or to come home after a long day of grinding to log off at home and find people erping in my bathtub..>.> It's been rare enough though to not warrant locking my house to all visitors.
As for solutions to your problem:
Lock your house so they can't get inside. If they are being harmless in the yard, learn to apprechiate howw lively it feels with them around^^
If they are being creepy and/or think they need to erp there, report them for that, as sexual talk in a public chat is forbidden anyway.