Contrac California Rodent Blox with Bromethalin
Contrac California is the same reliable and trusted Contrac product, but specifically labeled for use in California. It effectively kills rats, mice, and meadow voles.
The Contrac California product is the same food blend as the original Contrac but the active ingredient has been changed to bromethalin because it does not pose the same danger of secondary poisoning to wildlife.
- Contains single-feed, acute bromethalin.
- The palatable, all-weather formula can be used both indoors and outdoors.
- Must be used inside or within 100 feet of man-made structures.
- A PMP license from California is required.
Select Treatment Areas
Identify areas where rats, mice, or meadow voles are most likely to find and consume the bait. Typically, these areas include along walls, near gnawed openings, in corners and hidden spots, between floors and walls, or anywhere signs of rodent activity have been observed.
- Protect bait from rain and snow.
- Remove as much alternative food as possible.
Application
Rats:Â Place 1 to 6 blocks per location, usually at intervals of 15 to 30 feet. Adjust the amount of bait based on the expected level of rat feeding at each placement.
Sewer Rat Control: For use in sewers, thread a wire through a block and securely attach it to a stationary structure, such as the bottom step of a manhole ladder or a sewer grate. Ensure there is just enough wire for the block to rest on the manhole bench. If needed, suspend the block a few inches above the high-water mark or secure it on a board supported by opposing steps of the ladder. By using this technique, it is possible to stop rats or water from removing the block.
Use at least 15 blocks per manhole. Maintain a continuous supply of fresh bait for at least 10 days or until there are no fresh signs of rat activity.
Mice and Meadow Voles:Â Use 1 block per placement, spacing them 8 to 12 feet apart in infested areas. In areas with extremely high mouse or meadow vole activity, larger placements of up to 2 blocks may be necessary.
Baiting Strategy
The highest bait consumption is expected within the first day or two after treatment begins. After several days, inspect the placements and replenish bait at sites with evidence of heavy feeding or continued rodent activity. Typically, the volume of bait consumed will be significantly less with bromethalin baits compared to anticoagulant baits. Although one night's feeding usually provides a lethal dose, maintain the bait for at least one week to ensure all rodents have the opportunity to consume it. Continue baiting until all signs of feeding have ceased.
Follow-Up
Replace contaminated or spoiled bait immediately. Using waterproof gloves, collect and properly dispose of all dead, exposed animals and leftover bait. To discourage reinfestation, limit sources of rodent food, water, and harborage as much as possible. If reinfestation does occur, repeat treatment. Where a continuous source of the infestation is present, establish permanent bait stations and replenish them as needed.
