Potty training regression

Grr... I'm so frustrated! Our potty training has taken a huge step backward ever since we got back from vacation. The dogs (probably just Jujube) were not used to the new schedule of the pet sitter. We had the sitter come three times a day, but her schedule was still different from ours. We found accidents in our home in a low traffic area. No one ever seems to check that spot.

I'm not actually frustrated over the accidents themselves, but rather frustrated because the behavior has continued this past week. I thought once we resumed our regular schedule things would be fine, but unfortunately not. The peeing is continuing in the same spot. I had cleaned it as well as I could and sprayed it down with Nature's Miracle, but we're still getting accidents there.

On top of that, after I had cleaned that spot down, I tossed the soiled paper towels into the low and open wastebasket in the bathroom. A few days later, Yun tells me that Loki marked the wastebasket. It couldn't have been Jujube; she's a girl. And even though we're having a handful of potty problems, we both think it's really funny that Loki marked the wastebasket in the bathroom.

Can you see the yellow dribble?

The dogs were doing so well for such a long time too. Our last accident was in mid-June. Now, I think we have to re-potty train them, especially Jujube. Her peeing habits have also changed. She used to always pee very quickly as soon as we let her out into the backyard. Now, she's adopted Loki's behavior of sitting outside and not doing anything. She also pees on walks much more regularly nowadays. She used to never pee during walks, preferring to go in the backyard. Actually, I guess the more I think about it, her potty habits are slowly changing into Loki's.