Big jars of red pepper flakes from the dollar store might deter them a bit.
How to keep neighbor dogs from digging under fence.
You can stop your dog from digging under the fence through redirecting to a sandbox placing chicken wire under the fence hammering another fence layer into the ground or decorate your yard with dog friendly bushes or heavy stones.
Determine how far apart your spikes rods etc need to be to prevent the specific animal from passing through.
If you can t find an agreeable solution with your neighbors then you can have several other steps you can take.
Chicken wire can be dug into the soil under the fence up to an estimated 2 feet.
First eliminate attractions to the dog to your yard.
Your dog will stop digging in that spot since they don t want to paw through their own droppings.
Second place barriers to keep the dog away.
Causes of dog digging.
But you would have to replace them after every good rain.
For instance if you have an adjoining fence of 50 and your neighbor s dog is a medium sized dog then you might choose to place your stakes about 10 apart.
Place your dog s droppings near common dig spots to keep your dog away from the fence.
The best way to keep a neighbor s dog off your property is for your neighbors to keep their dog off.
Installing a chicken wire under the fence.
If you know anyone who can give you large rocks you could line your side of the fence with the large rocks and push any into the holes they dig.
If the fence is made of chicken ire it can be bent into an l shape which goes into the soil.