3 girls, twins age 3 and another girl of 7. They literally go into their garden and scream and shout at the top of their lungs. They never go out despite us living near a huge park and woodland area. They just stay in the garden yelling their heads off often swinging off the washing line or winding each other up. Even as we walk up to to top of our road we can hear them yelling.It becomes even worse when their 2 aunts visit as they encourage them to sing loudly and rile them up even more. It's becoming unbearable and like I say, it's every day. With having the windows open because of the heat, it is even worse. It's really getting to me and DH. There is no way they cannot know how noisy they are being. Aibu to ask how we approach this?