Our Anti-Flea Pet Necklace provides long-term protection against fleas, ticks and other pests. This extendable pet collar is made with a natural citronella formula that is known to be both safe and effective in the pet care industry. The innovative sustained release technology provides 8 months of protection with just one easy-to-use, non-greasy flea collar. Plus, we've specially treated the garlic essential oil so that it won't cause additional irritation in your pet's skin. Invest in your pet's comfort and health today; get the Anti-Flea Pet Necklace and you can trust that you're keeping pesky parasites away!