I need help with some logical consequences for DS. He's 3.5 (will be 4 in October) and we live with my parents and siblings. He is constantly going into everyone else's bedrooms and getting into stuff. We had those covers on the doorknobs so he couldn't get in, but he can get them off now. Usually I just remove him and tell him he cannot go into other people's space without permission.
It is becoming a huge issue in our house
. My siblings (ages 10-17) are understandable frustrated, and often react badly. My mom thinks that I don't do enough and he needs more consequences (by which she means spanking). She said today that if "You don't do something about it I will". 
I know the issue needs to be addressed, but I really don't know what to do. I have trouble thinking of logical consequences for DS. I don't think just talking to him about respecting others' space is working. I know that he knows what he's doing is wrong (he often taunts my youngest brother before he goes in his room
). It is so frustrating. I really need some ideas! Help!
It is becoming a huge issue in our house
. My siblings (ages 10-17) are understandable frustrated, and often react badly. My mom thinks that I don't do enough and he needs more consequences (by which she means spanking). She said today that if "You don't do something about it I will". 
I know the issue needs to be addressed, but I really don't know what to do. I have trouble thinking of logical consequences for DS. I don't think just talking to him about respecting others' space is working. I know that he knows what he's doing is wrong (he often taunts my youngest brother before he goes in his room
). It is so frustrating. I really need some ideas! Help!













He knows what he's not supposed to get into because if he hears someone coming (there are 3 adults in the house), he'll panic and run. But it doesn't matter how many times we talk to him about it (he's very verbal), he does it again and again and again. Every single morning, he'd sneak something from the pantry and every single time, I'd talk to him about it and he'd act all ashamed and say "okay" but again the next day, he'd do it again. So now there's a lock on the pantry.
We have a lock for the outside of our bedroom door in case both DP and I leave the house too because he took a wrench to our 37" TV.