My mom has a great little chihuahua that does well using a piddle pad in the bathroom. Some years ago she started holding her pee for way too long, so Mom started throwing her toy back to the bathroom to see if she would go. It tended to work, but now the problem is that Mom's been doing that for so long now she's become too trained and is highly finicky about going. I wonder if a local dog trainer could give advice on something like this? Maybe an in-house observation would be helpful.