Big cleansing breath.
What worked and works for us is having household rules that make sense. The rules have to be consistent and have logical and consistent consequences. The rules should be about respect and safety as a whole.
So what you can do is sit down and think about the most important issues you're having with the twins and look at the bigger picture. Is it really that they're spilling things and not closing doors, etc? Or is it that they're not following rules they can't see and they're not being respectful? That they're not receiving consequences and don't have motivation to behave well?
I would sit down as a family with the big issues in your mind. Lead your children to think about the biggest behavior problems going on in the house, and express some solutions to those problems. Let them think of some ideas for consequences.
For instance, guide them to help create the rule that only the toys they are currently interested in playing with should be out. When they're done playing with those toys they get put away immediately. If the toys are not put away then the toys get put in a big cardboard box that says, "Donations To Needy Children" on it. They get one week to earn those toys back by doing the appropriate chores or else the toys get donated to a women's shelter.
Another rule should be, "Show respect" and then additional rules about ways to show respect, such as "Obey Mom and Dad." If they don't follow these types of rules you have to decide ahead of time how the discipline will be handled. If you go with a time out, then you have to follow through and make it so that it's not pleasant. If you initiate a 7 minute time out on a stair, then they need to sit on that stair for a full 7 minutes in a row in silence to "think about the rule they broke so that at the end they can apologize" and then get a hug.
"Eat meals and snacks at the dinner table." If that rule is not followed and then someone spills something in the living room or anywhere else in the house, or there's mold growth or something else nasty, then they have to be responsible for clean-up. Yes, you'll end up having to clean up their attempts to clean up but it's the lesson. Natural consequence.
"Put used dishes, forks, spoons, knives, cups, in the sink when finished." If they don't do their own, then they have to do everyone else's too. :-) And then fill the dishwasher or if you don't have one, help wash or dry the dishes in the sink.
So you write down the rules, but also write down the consequences for not following the rules. That way you don't have to feel put on the spot for coming up with something that might not be fair or might not be strong enough discipline. When they're disciplined, apologies from them should always be expected and a hug from you would be the immediate reward.
There should also be a Family Reward at the end of each week. Maybe it's something they can choose from... the family gets to go sledding or rent a movie with popcorn. Or they can choose from going to a butterfly garden and going bowling. These rewards would be if they can get through the majority of a week without breaking the rules too badly.
It's not just about retraining the boys, but retraining how you react to them too. It's not easy. It takes a lot of practice, trial and error. It takes a lot of consistency.
One reason I love this method is that when the girls fuss about something, I can point to the list of rules and consequences and say, "It's not my fault... it's the rules." :-) Anything in writing must be true, right?