Controls rats and mice. Overlap cover edges prevents finger holds for high tamper-resistance. Exterior walls are doubled for superior strength. Vertical and hanging bait block layouts. See-through entrance without a raised lip encourages rodent activity. Gray color keeps internal temperature cooler, resulting in less melted bait. Both sides of the bait chamber can house standard plastic mouse snap traps. Bait sold separately. Refillable: Yes Pest Type: Mouse & Rat Indoor/Outdoor: Indoor/Outdoor Active Ingredient: N/A Pet Resistant: No