Hello All! I am new to the forum and am desperately in need of advice from those of you who have "been there done that." My 5 year old stepson (6 in October) is destructive and a terrible influence on my 3 (4 in sept) year old daughter. I have my degree in family and human development, have worked in preschools, and am entirely clueless what to do! In the past week he has used a knife to cut up the underside of his box spring, tried lighting the dog's #2 on fire, broke his balloon and threw a kicking/screaming fit which prompted me to pull over the car and sit with him on the rocks until he could calm down (during that time he threw a rock at my car), and used scissors to cut a hole in our couch. I set my alarm for 6:00am so I can be awake before him, but both the fire and knife incidents occurred when he woke up before I did and didn't wake us (my 3 year old daughter was present during both incidents). His language is also something to be desired, he doesn't often use profanity but consistently says bad/nasty words, which naturally my 3 year old soaks up like a sponge. We are pretty certain SS is ADHD, although he has not been diagnosed. I have tried treating his behavior holistically with healthy diet and vitamins/fish oil, ample exercise, and a structured environment, but nothing seems to work. My husband (who has joint custody, but is not biologically related to SS) has bipolar so routines can get a bit messed up when he's having an hard time. I need help because I'm getting to a point where I cannot stand to be around him, and I don't want my daughter around him because I'm afraid she will get hurt and because of how negative an influence he has on her (she now talks back, mimics his anger fits, etc.). The second thing I need advice with is what to do to make things better. I don't want this to ruin my marriage or our family (I'm 8.5 months pregnant currently), and because of my husbands bipolar I tend to take charge of the home/children. What do I do?! Thank you so much.