If it's really busy, consider a couple different open houses so visitors have the flexibility to attend either one or return for a second look.

The first step is always reporting to your local police department and getting a document that states that any unauthorized visitors will be trespassed immediately-- but in my experience, it takes more than just this to get the squatters out.

We have learned so much already as this is our first property but wow, some lessons are hard to learn!

Wow, those prices seem really high. 

O wow!

I mean, they are technically a squatter themselves so why not just put another squatter in that will make them miserable wow keeping them from damaging the property who will then vacate the property whenever that one’s gone.

Wow, that is the highest I've seen, and I would consider outrageous and a deal breaker. 

Quote from @Carolyn McBride: Wow, thank you all for the great advice and feedback.

1 - There are no sitelink extensions, which could give your ad more "visibility real estate" and better reflect your business.2 - There’s no phone extension, allowing visitors to tap and call you directly (which, of course, will be tracked in the Google dashboard).3 - There’s no Call to Action.

When a visitor lands on a page, they decide whether to stay or leave within seconds.