I'm sorry to hear this. I hope that things settle down soon. I have to deal with cats fighting with each other on a daily basis. My two girls just don't get along well with their brothers and they only tolerate Sky. This morning I woke up to Pearl & Ziggy growling at each other so they also fight with each other. I've tried feliway plug-ins and spray and also the calming collars and nothing seems to work. My girls love me but no one else. Ziggy will growl and hiss at both Alani & Blaze even if they just look at her from across the room. I sure hope that your home will become peaceful again. Good luck.