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Mary from Reseda, Ca writes

Roof Rats are stealing my bait. How long does it take for Contrac blocks to break down outside?

I am trying to make sure how long the bait will take to biodegrade outside so I do not have to be concerned about friend's pets in my backyard. Will rain accelerate the process?

Answer:

There is no defined time for the Contrac Blox to breakdown. The more moisture and direct sunlight the exposed blocks receive, the faster they will breakdown. The actual active ingredient will last until the bait has disintegrated. For future baiting it is important to secure the bait so that it cannot be carried off. If baiting in an inaccessible area you can lace the blocks on to a thick wire so it cannot be moved. If the bait is used in an exposed areas you can secure it in tamper resistant bait stations.

Answer last updated on: 10/29/2013

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