None what so ever. LOL. I think the clicker is so distinctive and rather loud that they will not be confused. I wouldn't give it a second thought...never had any confusion with my dogs. One thing to be careful about is clicking the clicker by accident. Sometimes when you're holding it, it just goes off. LOL. Always, always give a treat following no matter what. Even if the dog is engaging in some behavior you don't want. Treat anyhow, otherwise you lose your prime and the meaning of the clicker. You can always go back later and fix that behavior which you just reinforced. If you're trying to stop him in mid stream, interrupt him when you catch him in the act, by giving a mild, "eh" or "woops" that's OK. (IMO) If you're startling, making him nervous, scolding him, intimidating him, it is not a good idea for the reasons I mentioned. In addition to those reasons, punishment can make the dog perceive it as going to the bathroom is scary and he shouldn't go to the bathroom. He is not distinguishing that he shouldn't go in the house. Just...going to the bathroom is not a safe thing to do. So, he holds it better next time, maybe won't go when you take him outside...holds it until he can't anymore and then goes somewhere else, where he can hide it. Aversive punishment has no place in training/teaching IMO. There are way too many side effects. It is not necessary in order for the dog to learn. If he is making mistakes, it means he doesn't understand yet...has not had enough of a history of reinforcements for going outside or he's not quite physically mature enough. So punishment makes no sense to him. It just makes you scary to him and not to be completely trusted. It's hard on your relationship. Six months is not that old. It's really about average for this. My Dobe didn't get it reliable till he was about 10 months. He was a late bloomer. LOL. Other dogs I've had got onto it within a month or two and everything inbetween. So, they do vary a lot. When Lyric would have an accident, I was MAD! Mad at myself for not watching him closely enough. I corrected myself...gave myself a good talking to. LOL. LOL! That was good!