According to the "Best Rat Poison" category on Bestcovery.com, the products that rank highest are Neogen Rodenticide, Tomcat and D-Con. Bestcovery.com evaluates and reviews various household products, including pest control formulas.
Experts at Bestcovery consider Neogen Rodenticide Havoc Mouse and Rat Killer an easy and safe product to use. The poison is contained within a sealed package, so rats must gnaw through the package to get to the pellets. The formula is an anticoagulant that eliminates rats after only one feeding. Like Havoc, D-Con Rat & Mouse Bait Pellets are an effective anticoagulant formula. D-Con pellets are not as safely concealed as Havoc, but D-Con products are found at many retail stores. Tomcat Rat Killer II is a nerve toxin encased within a locking bait station. There is no antidote for the nerve toxin, so extreme caution must be used when handling this product. Pest control formulas should always be kept out of reach of children and pets.