Should I call social services on neighbors?

I have asked this here before and I have even called the child abuse and neglect hotline with no result. My neighbors currently have two minor children at home. They have always lived in pure filth and junk in and outside their mobile home. Junk and literal trash. So much junk it's dangerous. They have had the kids taken in the past due to an older sibling (no longer in the home) claiming ual abuse, which later was unfounded. I called about 6 months ago to the hotline mainly concerned about the health and safety of the children. The house is actually SO bad it should be condemned but we live in a rural area with no such means to do that. I have known this family for years and they are capable of working, they just do not. They literally lay together in a hide a bed in the living room, day in and day out, watching tv and smoking. The two kids share a room down the hall, but sometimes like in the winter end up in the living room by the wood stove due to heat not reaching the back room. They have frozen water every winter and go for weeks without running water. They sometimes have a car that runs and sometimes not. The kids generally smell and I am unsure if they get enough to eat, but do know they get food stamps. There is a tiny path thru the house and I have never been past the hide a bed they all lay in. The kitchen is so full of junk I do not know how they do anything other than microwave or hot plate food. When I called the hotline they would not do anything because I could not say there was immediate danger. There really isn't immediate danger as they have always lived like this. I am very tempted to call the hotline again, as the property is getting in worse and worse shape and the trash around the home and the yard is the worst it's ever been. I think some of the reason social services won't come is that there is not actual physical abuse and they children are like 14 and 16. So, what's your vote in again placing a call and just saying there is immediate danger, since that seems to be the phrase they want.