How would you prevent this from happening

[Tony P.]

This video came up on Facebook and I wonder how you would prevent this from happening? As someone who's preparing to invest for the first time this year, this terrifies me. My first thought is this is a screening issue, someone who lives like this probably as a history of doing so.

https://atlantic.ctvnews.ca/sydney-mines-landlords-on-the-hook-to-clean-up-squalid-apartment-1.4771374?fbclid=IwAR3NZB3CZSsjQUf72Z0BZSxNPt4mmjscvB_xwOgGP6TSQlMl9kd9TQ6fssc