Depending on why the dog is doing this will affect what approach might be successful. Hunger, attention, curiosity, boredom, etc. Some people have had success putting double-sided tape on the edges of the counter; the dog may not like the feel of it. Or, spraying the dog with a bit of water when he hops up. Some owners leave empty soda cans on the counter near a large treat, such as meat. When the dog finds the meat and knocks over the cans, the noise may scare him off; he may think that it isn't so pleasant an experience to hop up on counters next time (don't try this with a nervous dog, though). Of course, it helps to keep food off the counters, so the dog isn't tempted. Keep a bored dog more occupied. If your dog is always hungry, ask your vet about what foods might be more filling but not more fattening. For more information and suggestions, you might be interested in this article from the ASPCA:
http://www.aspca.org/pet-care/virtual-pet-behaviorist/dog-behavior/counter-surfing-and-garbage-raiding
Depending on why the dog is doing this will affect what approach might be successful. Hunger, attention, curiosity, boredom, etc. Some people have had success putting double-sided tape on the edges of the counter; the dog may not like the feel of it. Or, spraying the dog with a bit of water when he hops up. Some owners leave empty soda cans on the counter near a large treat, such as meat. When the dog finds the meat and knocks over the cans, the noise may scare him off; he may think that it isn't so pleasant an experience to hop up on counters next time (don't try this with a nervous dog, though). Of course, it helps to keep food off the counters, so the dog isn't tempted. Keep a bored dog more occupied. If your dog is always hungry, ask your vet about what foods might be more filling but not more fattening. For more information and suggestions, you might be interested in this article from the ASPCA:
http://www.aspca.org/pet-care/virtual-pet-behaviorist/dog-behavior/counter-surfing-and-garbage-raiding