in heat? I have two female dogs and both are currently in season. They are housetrained but all this week one has been weeng in the house. I've cleaned up with vinegar each time but she's still doing it. Could it be connected with her being in heat and if so what should I do?

Yes, it definitely could be connected to her heat. Females quite often "Mark Territory" when they are just coming into heat or are in heat. It also could be a mild infection, as females tend to lick themselves a lot at that time and can transfer dirt, etc, from other parts of their body to their Urethra. I would take a urine sample to the Vet just to make sure. Use a foil pie pan to collect it, just slide underneath as she is going!