I have been split with my ex for 7 months now we have 3 boys 5, 2 and 1. The 5 yo keeps telling me that he wants to live with me and the 2 hates going back to his mum. I tell him that we're going back to mummies and he starts screaming no no I don't want to. When I finally drop him off he screams and tries to run away from her. Her house always has food on the floor and mice running round but she lets the 1 yo eat the food of the floor. She gets drunk every weekend that I have them and forgets to ring them and when we were together she would always fall asleep after getting drunk. Last time she got drunk I offered to watch our sons at her place since it was her day with them. She agreed and asked me to come down straight away. It took 10 minutes to walk there. When I arrive the front door was wide open and she was asleep on the couch. My 1 yo was eating something off the floor and the 2 and 5 yo were climbing onto the tv cabinet and the mantle piece. She didn't wake up when I walked in or said hello to my boys. I started banging stuff around in the kitchen with the boys and it took about 5 minutes of this for her to wake up. Also 1 month after our breakup I noticed that she had not changed my 2 yo sheets since I left. This went on for a while. About 3 months later I had to go down to help her fix a window that she couldn't lock and noticed the same sheets on the bed looking mildew, where his head would be so I said something to her and she told me it's not up to me to pick faults in her house and that she did change the sheets regularly even tho there was clearly mildew on them and what looked like mild spots. What legal action can I take with this? I have contacted dhs over it and they said I can stop her taking the kids if her house is a pigsty but I've given her the chance to clean it up. If it goes back to the same state can I do anything about it.