Fighting Mouse Infestation

[Dewain J.]

I own a six unit building, in which I had a filthy tenant on the top floor. This tenant recently moved out and left the place in a deplorable condition. They  specifically had a terrible mice problem. Now that they are gone, the tenants throughout the place are having terrible times with mice. So much so that I've allowed several of them to get cats to help combat it. 

There are two who don't want cats and thus it hasn't helped them. Part of the problem is that some of the tenants are just dirty and leave food and trash out. Now that the other tenant is gone the mice has moved on to new sources of food in this new place. 

I'm looking for any kind of strategic approach to educating these tenants for one, and then also making a big dent in the rodent infestation. Any help would be appreciated. 

This was found in the recently vacated unit: https://youtu.be/lU1n3OJ6Omg