I feel your pain. We will do great for days and then, ugggg! Today was an ugg day. I have to go back to work in two weeks. I am so sad that they are not trustworthy yet. So Barney and Anna will be confined to their playpen. Fortunately it has been a poop and pee free zone so far. But I would be much happier leaving if they had run of the house. I have no advice, but you are free to cry on my shoulder. Just watch out because I may be crying on yours also.
On a different note, thank goodness your sister's dog is potty training so quickly. Can you imagine cleaning up that poo???