Neighborhood issues

There is a family in our gali consisting three citizen: daughter, son and a mother. They are living on rented flat on ground floor. We don't have any personal problems or not even we communicate to them since they are living in the house. The problem is initially they gave stay to two street dogs at their home and feed them, care them which is good. After some time those two now turned to almost 6-7 dogs and few of them have allergy problem. Now in the compact gali these dogs are making difficult for people in the gali. The dogs are creating problem. When people go to family to talk to them about dogs they say they are street dogs. The family have engaged in number of fightings that is why peolle feel worthless talking to them. Their landlord have also given them permission. These dogs daily do shit in front of our house and we cant do any thing. These things are creating pressure and the family intentially making other lives difficult due their love for dogs. The gali is compact. Now the family want other people to make effort to get rid off dogs. We want a legal action against the family to disturbing our lives as the dogs did potty in front of our houses regularly.