I'm sorry your dogs are behaving badly. That's sure not why we get them! Our dogs are part of our family and we love them and with work they learned where their place was and what behavior is acceptable.
Please take what I'm going to say
as motivation,
not as a personal attack on you.
Are they fixed?
I'd let those dogs know I'm the alpha queen and their behavior is not acceptable. They would watch my every move because I'm the boss, they live here at my pleasure and they have certain behavior expectations. Dogs should not think they have the right to touch your things, much less destroy them, you and your family should be above them in pecking order. They should go where you invite them, not be under foot and a danger to you. They need to know you are not a litter mate they can not play with You as an equal,
You are the ALPHA! They are smart breeds they should learn quickly,
and knowing what their place is will give them confidence and happiness. Being able to do what they are bred to do (work) will bring them happiness and purpose. If it's a retriever, do you play fetch? If they are bred to enjoy swimming and retrieve do you take them swimming? Make sure they get to do what they are bred to do. They will want to please you, you help them do what they love. Give them work, they love to please you by working.
Do they have enough area to exercise? Bad gas is a sign of not enough exercise & or the wrong food. Daily exercise solves many behavior problems with dogs who are bred to work. Dogs nails grow, if they don't keep them warn down with exercise, they need trimmed or they will naturally dig to trim them. If nails are trimmed correctly and consistently they don't naturally feel obsessed with digging. Digging under the fence makes their long nails feel better. The dogs should lay there and let you trim their nails.
This sounds blunt, but that's how OT's roll. Except Fred, I'm jealous of Fred's ability to word things without offending!
If you can't control your dogs, you should get them to a trainer who can train YOU how to communicate with your dogs. A good trainer can quickly teach YOU what You are doing wrong. Only at Disney do dogs understand English, they have their own language and you can make simple changes so they understand where they rank in the pecking order at your place. For example when a dog lays on it's back it's showing that it is submissive to you. When you play tug o war with dogs it tells them they are equal with you and you want them to challenge you for position in the pack order. It's little things people do for fun that sometimes sends loud messages to dogs. There is a good reason that older dogs will take younger dogs down and put their paw on them and bark in their face, they are teaching them to be respectful, and that's talk dogs understand. Sometimes people get lucky and get a dog that behaves in spite of it's owner.
When someone has to call so they can let their dog out, you are a bad neighbor. In many places your dogs would come up missing if they trespass.
"Good fences make good neighbors"
Please know I say these things to help motivate you to get these problems fixed so you can enjoy these wonderful creatures!