Opkill Rat Poison & Mouse killer - 300g Strongest Bait Available Weatherproof Fast acting and Safe for Professional and Domestic use (Professional Choice Blocks 15 x 20g)Our bait blocks have been professionally formulated to achieve optimal results, and all of our products are quality tested by professional pest controllers prior to public release. Multi feed poison which means that unlike many other baits on the market, This poison is specifically designed to reduce bait shyness and to maximise bait take and delivery of poison to each rodent and maximise effectiveness from day 1! These Rodent Blocks are a highly