a while back i posted about maggie jumping on my one and a half year old son. it isn't getting better someone mentioned that they used a static collar; i looked online for one and can't find it. i googled "static collar" + dog and nothing. am i looking for the wrong thing? where do you get them? are they hard to find b/c they're not good to use? i'm getting desperate. we have maggie in puppy training class but nothing gets her attention when she sees my son (and now she's not just nipping at him, but actually jumping on top of him and knocking him down).