If your dog has a reputation for being a bit of a ‘crotch sniffer’ you need to get on top of this. Have a zero-tolerance policy, telling them a firm ‘no’ every time. Reward them when they are well-behaved, offering lots of praise as well as some tasty treats. Some dogs may need to be kept on a leash around guests at the start of their training. Once they have more control over themselves, we can let them off the leash under close supervision.