I noticed several bait pellets with zinc phosphide listed for moles. I thought moles primarily ate worms and grubs. How does this bait work on moles if their normal diet doesn't include this type of food?
You are correct that a couple of pelleted baits do have moles on their labels, but these generally have been fairly ineffective against these carnivores / insectivores. Moles will eat some small amount of plant material in addition to their primary diet of meat, and perhaps it was this slight deviation that caused them to take an interest in pelleted grain-based baits. But, without a doubt, at this time the superior bait for moles appears to be Talpirid, those soft worm-shaped baits that are extremely attractive and palatable to moles and which contain bromethalin as the active ingredient. This single-feeding active works quickly and requires a single bait "worm" to be lethal.
Mr. Pest Control
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Please note, Mr. Pest Control is answering questions supplied by PMP customers across North America. His answers are generated from industry and manufacturer-provided information. The answer may not be specific to the laws and regulations for your State, Province, Territory or Country. In addition, products mentioned may not be registered and or available in all areas. Always check with your local Univar office for specific information to your area. Always read and follow label directions.