I just recently moved to Atlanta and I live in a Townhouse Complex. Some people don't clean up after their dogs, they just hide it under leaves, pine needles, etc... Its so hard to tell where it is. Mika seems to catch me off guard when she seems to be sniffing for a good spot and instead takes a nibble into the ground. I always catch her one step too late and give her the firm no, but I don't know. I thought maybe there was another trick or someone else who might have experienced a problem with there pet such as this. I guess I will have to continue trying to stay one step ahead of her.
