Verified answer

Does the dog seem to care when they get shocked?

If the answer is yes, the problem is likely training and not the collar. Spend two weeks working diligently on training your dog to learn to retreat when they hear the warning beep. There is a good training program here on our site: http://www.dogfencediy.com/training/

If the answer is no, and the dog does not seem to care about getting shocked, you may want to try a collar that has a higher powered shock. e.g. the Petsafe Stubborn dog model (see a review at: http://www.dogfencediy.com/reviews/petsafe-large-d...

Alternatively you could put two collars on your dog to double the strength of the chock.

Not likely. This is a common problem with invisible fences.

What's on the other side of the fence is worth getting shocked for. However once he's out it isn't worth coming back over and getting shocked to return to his boring old yard. Many dogs get lost this way every year.

Shock collars are cruel. And many dogs learn to just go through it. I would either build a fence or set up a zipline or some sort.

Try a different method of training with the bigger dog

Shock collars should not be a long term solution

i tried this on my smaller dog but it hurt her wayyyyyy tooooo much so i stopped the second i heard her screaming... theres this thing you can get thats an invisible fence... kinda along the same line...

theres also a spray collar that you can get. see a bad behaviour and you squert them in the nose with this collar thing. i think its just citronella...

if that doesnt work then try googling a bunch of ideas or even talk to a vet to get their opinion...

also be firm with your bigger dog... they can take a bit more disipline (not beating him)

why don't you try training them and not torturing them how would you like being shocked around your neck everytime you had to take a piss or something