This is what I bought at Amazon.
https://www.amazon.com/gp/product/B01D8UER66/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

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This is what I bought at Amazon.
Slightly off-topic perhaps, but I've been watching a you-tube channel called the minkenry about a guy in Utah who does rat extermination using dogs and trained mink. I've gotten many a vicarious thrill from watching and cheering for the mink and dog to kill the little buggers!!(he also hunts other things with them, so just be aware. no, I'm not a sadist, i'm just very,very frustrated and am glad to see someone else having luck with their extermination program). I think he's been helping/training others around the country to do the same?
Might be someone in your area? (no idea on cost, tho)
I had a possum consuming the bait. I thought for sure the bait would kill it but it would come back night after night and destroyed a couple of my bait boxes. After doing some research I discovered they have an immunity to rat poison. Here is the possum with a chunk of the rat bait in it's mouth.
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