I wouldn't try a poisonous material on an animals fur. Something about they lick themselves clean and don't have an understanding of the danger.
Try peanut butter, like you would with a bubblegum in the hair. But I'll be honest, my long haired cats get sheered every summer for this very reason.
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-IronRaven
When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.