The vinegar does help, but remember,.....dogs have thousands times the smelling power as humans, so they will smell urine and poop.
Try this,...soak up the urine with a paper towel and pick up the poop with one also, show him both and say,...."NO". Take him and the towel's outside and place them where you want him to go and say, "potty here". It will take several times, but he'll learn. Shelties are very intelligent.
Try this,...soak up the urine with a paper towel and pick up the poop with one also, show him both and say,...."NO". Take him and the towel's outside and place them where you want him to go and say, "potty here". It will take several times, but he'll learn. Shelties are very intelligent.