Bait Mini Blocks Combo Bait Mini Blocks deliver the first rodenticide that also eliminates fleas for an all-around approach to pest control. The bait is effective against Norway and Roof rats; house mice, deer mice, and white-footed mice; voles; and the fleas that reside on these rodents and may be carriers of infectious diseases. | Kaput Combo Bait Mini Blocks for Rodents | Size 4 lbs