I just bought a pair of shih tzu few days ago. First day, they are very quite. but second start barkind. I put them in the play pen, they also keep barking. when u let them out they will stop it but the problem is housebreaking in the dining room. So now i put them in the bath room. both of them is 5 and 6 months. very cut except housebreaking. I stay will mt friends so can let them out in the dining room alredy cos one of my friend complained they are smelly and housebreaking although i bath them already. I was not always at home cos need to work except at night, so can cleaning them always. I thinking keep them in my room but my room very small can fit them. Their problem is barking and housebreaking only. thinking want to buy the bark control coller, can someone told me where to buy it?