Pittsburgh does not have rent control, but it is equally difficult to evict somebody if they stop paying their rent. My uncle had a 1+ year legal battle to try and evict some deadbeats, during which he had to continue paying the mortgage on that building without the income. Oh, and the tenants got a free attorney from Neighborhood Legal Services to file their appeals....my uncle had to pay his. When they finally moved away he found multiple holes cut into his walls which were filled with drug paraphernalia.
Maybe they should make a call to the “Sopranos” to get the apartments vacated? Maybe if the renters are mugged a few times in front of the building they will get the picture and move.