The biggest problem in dog training. Agree or disagree?

Zak George's Dog Training Revolution: The Complete Guide to Raising the Perfect Pet with Love

PET CORRECTOR Dog Trainer, 30ml (Pack of 2) - Stops Barking, Jumping Up, Place Avoidance, Food Stealing, Dog Fights & Attacks. Help stop unwanted dog behaviour, safe, humane and effective.

Pet Botanics 4 Oz. Pouch Training Rewards Puppy Bites Soft & Chewy, Peanut Butter Flavor, with 200 Treats Per Bag, The Choice of Top Trainers

Training His Pet (Owned and Protected Book 6)

Dog Buttons for Communication, 4 Dog Talking Button Set, Speaking Buttons for Cats and Dogs, 30s Voice Recordable Pet Training Buzzer with Waterproof Dog Activity Mat and 24 Scene Stickers

Pet Botanics 4 oz. Pouch Training Reward Mini Soft & Chewy, Duck and Bacon Flavor, with 200 Treats Per Bag, The Choice of Top Trainers