We do carry many rodenticides for baiting mice. One of them that fits the size description that you are seeking will be the Kaput Combo Mini Blocks.
Kaput Combo Bait Mini Blocks can be used around the outside perimeter of gardens in tamper reisistant bait stations.
All bait such as the Kaput Combo Mini Blocks are legally required to be used in tamper-resistant bait stations for any above-ground applications. Stations do several things for us. Primarly, stations keep bait out of reach of non-target animals and children since these items could be harmful to them. Secondly, stations protect the bait from weathering such as rainfall. Stations also keep bait in a secure location to prevent it from being carried off by target or non-target animals so that we can easily monitor our placements. Finally, stations create a nice harborage area that attracts rodents into them as a hiding place.
If you would not like to use bait, then you can use mouse snap traps to catch voles as well. You can view more information about using traps for voles in our Vole Treatment Guide here.
Unfortunately, there is no such product that will force a mouse or rat to go outside to die. Once a lethal dose is consumed, they can die either place. You should use Kaput Combo Bait Mini Blocks in tamper resistant bait stations or in areas inaccessible to non target animals and children.
Kaput Combo Bait Mini Blocks are a a first generation multi-feed bait. Please let us know if you have any more questions.
Protecta Mouse Bait Stations would be a good choice to use with the Kaput Combo Bait Mini Blocks. Apply 1 block per placement at intervals of 8 to 12 feet. All bait placements must be inside or within 50 feet of buildings.
Yes, the Kaput Combo Bait Mini Blocks will fit inside of the Protecta LP bait stations.
Kaput Combo Bait Mini Blocks are designed with a hole through the center.