Problem Neighbor- loud at 3 am

[Brian Horwitz]

Hi BP,

I have a very nice rental house in a not so great neighborhood in Indiana that had a great tenant. The tenant (2 adults and 3 young kids) moved out because "they couldn't stand the neighbors". I found another great tenant (3 Adults, 1 newborn) and after a few months, they are complaining about the neighbor again. They both said the couple next door leaves trash all over their front yard and the biggest problem is loud music and yelling at 2,3,4 in the morning. The tenants don't want to call the cops due to retaliation fears. I don't know what to do but I don't want to lose another great tenant! Any ideas BP?

Thanks!

Brian