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I have a problem with rattlesnakes in yards killing dogs. Folks talk about a repellent made of grated lemon or orange rinds mixed with a chemical called paradichlorobenzene. What is it, and does it work?

Last Updated: May 10, 2007

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There are no effective rattlesnake repellents. Paradichlorobenzene is the active ingredient in one type of mothballs. As such, it is a pesticide and must be used according to label instructions (the label for mothball products does not mention snakes).

There is a registered pesticide called "Snake Away" that uses naphthalene as a contact repellent for snakes. Unfortunately, there are no scientific studies as to its real effectiveness.

Consider putting up a snake fence, with 1/4-inch hardware cloth 12 inches below ground and 18 inches above ground.

Online Resources:
Venomous Snake Control

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