On a clear day and with tenant notification, get a hose on the outside and spray it at individual windows and doors in the suspect rooms. 

Tile or not pets tear up flooring, baseboards, and wood doors.

Quote from @Wilson Hunter: Now that I have Airbnb and VRBO traction on multiple vacation properties I would like to explore creating a direct booking website for family, friends, and repeat guests to book without all the platform fees.What are recommendations on website service that allows for (1) multiple properties (2) running transactions (3) synced calendars?

There is a really good meetup in your area that Bill Powers used to run. 

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases.

. - The land was homesteaded under the same parcel ID as our primary residence as it was next door and will be carved out at sale. - We have lived in the house more than two years

Anyone lending on a build is going to run a title search on the land and see the lien. 

Also, I don't want to do anything illegal, I want to run the business professionally.

Rents for single family home, 3 bed 1.5 bath in this area run around 1,00-1,400/month.

Or if you make a scale template might find you need 50 doors to get there and you have to add team members.