I've cut 99% of unwanted calls doing this routine.

Using escrow company & title insurance will protect you from an unwanted surprise.

I was a beekeeper in the past and had a business removing bees from unwanted areas as well as working with swarming bees. 

Invasion of privacy, unclean and rude house members, maybe if they do drugs or smoke or are party animals, unwanted friends of theirs visiting at odd hours, clashes of personality

Howerver, I have resrvations about how this will impact the community's living standards as the development will immediately border some neighborhoods and could bring unwanted environmental impacts and noise. 

Some land flippers will buy unwanted and neglected parcels of raw land for a bargain and then improve them by clearing the land or even leveling it before selling it on.Most land flippers are making money by actively seeking and marketing their land flip projects.

I bought my stuff cheap for cash, most over a decade ago.We still find distressed properties and motivated sellers willing to get rid of unwanted properties cheap that we fix up and rent out.I also use cash from my self directed IRA to also buy properties for cheap.

My business is Egg Yolk Capital which also grabbed (wanted and unwanted) attention 

I’m looking for ideas on safety measures that I should consider or ways to eliminate the lingering by unwanted guests.

I feel in my gut that they are trying to sell me an unwanted lien, tho they state that they are helping me get a property because the owner will not fulfill the bankruptcy.