Screening application email, Mn single family house

[Patrick C.]

I just wanted some input on how to best screen tenets, I simply email them some questions and an application (pdf) and ask them to fill it out, most of the time they don't respond ( my though is because they don't have a credit score, they have pets or they have a criminal background)  The application I use is the one from Bigger pockets. 

Here are the questions I send out, (some of them are repeats in the application but I want to weed out the No's quick)  Also I ask them to go to a website for there free credit report and screen shot it, (figured if they do that they have nothing to hide) 

www.annualcreditreport.com,

Please go to website for your credit score and screen shot it and send to me. Thankyou

1. Applicant must have current photo identification.
2. All income must be from a verifiable source. Unverifiable income will not be considered.
3. Applicants must receive positive references from all previous landlords for the previous 5 years.
4. Applicant may not have any evictions or unpaid judgments from previous landlords can not have any prior felonies.
5. Applicant must exhibit a responsible financial life. Credit score must be a minimum of 600.

6. A background check will be conducted on all applicants over 18. Applicant's background must exhibit a pattern of responsibility.
Renter responsible for utilities

7. No Pets. 

Wanted to make sure i'm screening tenets the best way and not making things to confusing.