1.   As a last resort, I purchased a shock collar.

2.   But Cox, too, concedes that shock collars are not necessary in most situations.

3.   He insists that owners should never use harsh physical punishment, prong collars, shock collars and other painful training techniques.

4.   Luper said shock collars should not be used as a substitute for more in-depth, general obedience training.

5.   Luper said that in the hands of an inexperienced dog trainer, a device such as a shock collar can become traumatic to the dog.

6.   Shock collars are commonly used to teach dogs to stay clear of snakes.

7.   Shock collars, also known as remote trainers, usually consist of a simple snap-on nylon collar with a receiver in the middle that resembles a pager.

8.   The invisible fence is a buried wire along the perimeter of the property, broadcasting radio signals that will activate a shock collar if a dog gets too close.

9.   UNDATED - Study all instructional booklets and instructional videos before using a shock collar.