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100% man. If a dog has gone toilet inside, it’s your fault, nothing to do with them. You need to scold yourself, not the dog. Dogs don’t associate the telling off with what they’ve done 8 hours ago....

Cons - it is super strict and not ideal for a dog in a family. Realistically most people are going to struggle to lock their new puppy outside in a kennel or crate when young kids want to hang out...