Deltamethrin (delta-METH-rin), found commonly in Adams Delta Force and Preventef-D flea and tick collars, is classified as one of the more safe insecticides out there. It’s a synthetic Pyrethroid, which means it’s a synthetic derivative of a naturally occurring pesticide called Pyrethrin, which was found in the extract of chrysanthemum flowers more than one hundred years ago. “Safest” refers to humans and domestic mammals – not fish!
Amitraz (AH-mih-traz) is an active ingredient found commonly in Preventic products. The specifics of how Amitraz works is still a mystery to most scientists! They can agree on one thing, though: it’s an effective anti-parasitic drug. (It’s also sometimes used to treat mange.)
Pyriproxifen (pie-rih-PROX-uh-fen) targets flea eggs and larvae. It essentially sterilizes pests, rendering them unable to mature, and thusly, unable to reproduce.
Propoxur (pro-POX-ur) quickly causes the nervous system of fleas and ticks to breakdown. Within 24 hours of application, insects will simply keel over and die on your dog’s body. Propoxur can be highly toxic to humans, so take care when clipping the collar on your dog, and be sure to wash your hands afterward. Do not allow children near the dog while they’re wearing Propoxur based collars.
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