...How do I train them to stop? How do I get my two dogs to stop barking constantly whenever I let them outside in my backyard, not involving and eloctronic collars or anything like that.

citrus collar. sprays citrus when they bark they soon stop.

Have fun with trying! I finally had to resort to the bark collar because I had to run outside every two minutes to yell at my dog. Everytime another dog barks or it see's a bird or squirrel it's going to bark. I wish you luck and hope you have the time and patience to get this taken care of.

barkcollar

DONT USE PEPPER SPRAY! use water its humane and it does not hurt the dog unlike the peper spray. what the hell is wrong with u people? u dont us pepper spray on a dog.sickos