You could subpoena the medical professional to testify.

I would ask all three tenants: “if you know who did it and you tell me and testify in court, I will pay you $500 or give you credit on half a months rent.”

I have 2 witnesses that can testify that I did not have mold in my addict.

He said I can go after the city for the money if I can get several neighbors testify that the problems has been there for years.

I have testified for landlords and against landlords in court that were being sued.

You will need to first speak to the other tenants and confirm that they are prepared to testify at the eviction hearing.

Contact the court you will be involved with and they will instruct you as to how to proceed.Usually you will be required to subpoena the officer to appear to testify.

So he comes in and testifies that HE got the check and called you and offered to deposit to your account. 

As a cat owner I can testify that this actually has worked better than pet store solutions in our house:First mix vinegar and water 50/50 and soak the areaWhen almost dry soak the area with a mix of 1 cup hydrogen peroxide (3%) mixed with 1 teaspoon of dish soap.

The wife signed for the notice, but testified under oath in court that she never told her husband.