Ugh… as someone stated before I think that’s more a owners problem than the dog problem. Clearly your brother didn’t properly train his dog and now you’re suffering because of it. Normal dogs can wait 8h or more if needed without shitting or peeing because people need to work and can’t take them out every 2 hours
I understand that but when someone gets a don’t you don’t get the option not to take it outside, unfortunately. The thing gotta poop