Collars and leashes for dog training are excellent, effective tools when they are used properly.
Things to consider: How to use electronic training devices and proper ways to uses collars and leashes as training tools.
No Harm - Dog training collars and leashes are designed to startle the dog, not harm him. If your dog yelps when you correct him with the electronic collars and leashes, then you have it set too high. If you have it on the lowest setting and he still cries out, the collar may need to be checked to ensure that it is properly positioned. An improperly positioned electronic collar could cause the dog undue harm and is easy to avoid if you follow the directions carefully.
Tools Only - Collars and leashes are important dog training tools and should never be used as either punishment or dog toys. To ensure that you can most easily and effectively teach your dog to walk obediently on a leash, never yank forcefully on her collars and leashes and never let her play with or chew on her collars and leashes.