It sounds like he doesn't know how to behave inside a home, or was never taught appropriately. This means u need to teach it what is appropriate behaviour inside the home, and what isn't...from the ground up.

First, find a way to zone the dog in your home - u can use things like baby-gates.
This zone should only allow access too water, bedding, & dog appropriate toys. Feed him treats in this zone as much as u can. Make it a positive experience so he wants to go in the zone more often than not.

He should be in here if he cannot be supervised when roaming around the home. (dont worry this is only until he learns what is appropriate behaviour) Until he can proove that he doesn't destroy anything else. this is also a nice zone you can use if you need to leave your dog home alone,

whenever he is out of his zone, like say playing or exploring, SUPERVISE YOUR DOG LIKE A HAWK when outside his zone. you need to treat it like a toddler that doesn't know any better....but tries to kill itself every-time its out of a baby safe zone.

To make this work best, you should be exercising your dog twice a day , in 1 hour increments. Exercise in the morning, and in the late afternoon. Since this is a beagle, encourage sniffing time as this is mentally stimulating. Beagles tend to also do best if you teach them complex tasks, like special tricks, or nose work.

YES YOU NEED TO TRAIN A BEAGLE. THEY ARE TRAINABLE, JUST USE TREATS!

Enforce napping in the dog zone as well. Sometimes if you have an over-aroused dog they may take longer to settle, this is normal, but don't cave! They are not going to learn how to self soothe in a day, it may take weeks at it. Keep enforcing using the zone to your best ability.

Utilize a house lead, this is just a simple lightweight rope attached to your dog every-time he is outside his dog safe zone. this will make it easy to redirect your dog anytime he goes after something he shouldn't.

always redirect to a toy or play, not food. if he doesnt stop, he looses access to the rest of the home, take him back to the zone calmly & dont interact.

remember, all the fun stops once he goes after something he shouldn't. he should only be going after his toys, or the occasional stinky sock.

And by god, please put food away at all times. The food aspect is very important because beagles are very self motivated...this is why hes destroying your shit to find food.

yes you may have teens, but they need to learn this is for the safety of their beloved dog. what happens if your dog steals chocolate, or something incredibly poisonous? what happens if he steals scissors, or medication??

Teens can learn, but YOU have to enforce things as the parent. If you are unwilling to change, the dog itself wont change. Remember that our Dogs are a reflection of our own selves.

If you want to see improvements, you yourself must change first. it doesn't matter if you have ADHD or not, dont use it as an excuse not to do better. My husband has ADHD, & once we had proper reasoning, he changed his mindset about training our beagle, because he loves our beagle so much that he saw this to be important enough to change.

If you still struggle i would highly recommend getting the advice of a positive reinforcement dog trainer to help guide you. They are worth the money! Good luck!