For hard-to-reach areas like rat or mouse burrows, trust easy-to-use RatX Throw Packs. * * Formulated using naturally derived ingredients*, RatX Throw Packs contain a measured dose of RatX pellets, effective for indoor and outdoor rat and mouse control. The bag is made of biodegradable and compostable cellophane - easy for rats and mice to chew through. * * RatX Throw Packs kill rats and mice with negligible odor by blocking thirst signals so pests dehydrate and die. And with RatX Throw Packs, you don't even have to see your targets... just toss a Throw Pack where there's evidence of rats or mice and let RatX do the rest.