How to spot an aggressive tenant

[Pal Sa]

I am starting with my first rental. I have put my home on the market, doing showings. I am wondering how I can spot an aggressive person. I am looking for someone that can be nice to deal with or at least have a stake in the ground not to be rude or misbehave with me.

I just had an applicant submit an application. They paid the fees to get their reports. I reviewed and I chose not to go with them. I let them know my decision. They became very hostile and aggressive towards me after that. First, I am spending hours dealing with that person, then thinking about it. I wish I could sense it and would have asked them to not even apply. 

Do you all have any tricks on your sleeve to identify reasonable tenants? How can we identify even before they submit applications (and pay fees)? How do we communicate we do not want to accept the application? It seems to be hitting some raw nerve. 

[Karl B.]

Easy. Check his or her Facebook account. You'll learn A LOT about a person by what they post on Facebook.