1 Symptoms are due to the effects of excess acetylcholine on nicotinic and muscarinic acetylcholine receptors in the CNS, at neuromuscular junctions, and in the sympathetic, and parasympathetic nervous systems. 2  Nicotinic and muscarinic receptors have different. 3  Functions. 4  Locations.
The reason snake repellents don t work is because there is nothing intimidating to a snake about the smell of naphthalene or sulfur. Even if there were, snakes do not smell the way people traditionally assume they do. Snakes use smell as a method of information.
A Colorado State University Extension report in 2006 claimed home remedies such as moth balls and commercial snake repellents containing naphthalene failed to repel many species of snakes. Garter snakes, western rattlesnakes, brown tree snakes and gopher snakes were among those not bothered by the moth balls.