Why does a single mom with 4 kids think she should have a yard for their kids to play in? Such niceties are earned through hard work. She should have thought of that before lying down with guys she had to know were deadbeats. 
In fact, it might be time to start considering that to be child abuse. Children raised by single mothers are substantially more likely to drop out of school and and end up involved in violent crime. They also make up the vast majority of those in prison for violent crime. 
Stop increasing benefits  when pop another out. Being on welfare should not be comfortable. It should feel humiliating every single day so they get motivated to get education and training so they can get a well paying job. 
I had a suck job when I got out of the USAF. That motivated me to go to college. 
Discomfort is necessary for them to change their ways.