Call for Help
As mentioned above, you will probably want to use pest control Squamish services unless you can trick the animal into leaving on its own.
Even then, you will still need to determine how the animal managed to enter your house in the first place. Unless you know for a fact that you simply left a door open when you shouldn’t have, you will probably be unaware of the point of ingress.
Professional pest control experts will be able to determine where your visitor came from and ensure that once they are gone, they stay gone.
Don’t take chances with your home and the health of your family. Make sure that you are safe from future visits from those unwanted guests.
As for the in-laws though? Well, you’ll have to figure that one out on your own.