Synergy Labs

Fooey! Ultra Bitter Spray

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Variants Available

Fooey®! is so disgustingly bitter, we actually have a registered trademark to say it's the most bitter stuff on earth! When used in conjunction with recommended training methods, Fooey®! stops dangerous and destructive behaviors such as: unwanted chewing, licking, biting, ingesting and more.


Purified Water, All Natural Bitter Principles & Extracts, Preservatives