| http://www.w3.org/ns/prov#value | - The two chemicals in the cat flea drops are: Methoprene, which is essentially non-toxic (it is a hormone analog), and Etofenprox which a synthetic chemical similar to compounds from Chrysanthemums??? is also generally non-toxic to vertebrates, because they can discharge them quickly (invertebrates cannot)??? and that holds true except for CATS?!
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