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Robert from Hollandale, Wi writes

I have been using Contrac bait for some time. Do I need to change brands because they may get immune to it?

Answer:

You should rotate Contrac All-Weather Blox Rodenticide every 4-6 months with a bait that has a different active ingredient to prevent resistance.  Fastrac or Final are great options.

Answer last updated on: 11/14/2018

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