Lizard venom is powerful
I use Furadan, bought at an agricultural store, 15,000 per pack.
Just sharing my experience: this monitor lizard pest has already eaten 4 of my pet Muscovy ducks.
After seeing it on YouTube, I tried it.
Oh yeah, first, place the poison away from your livestock and try to use something with a strong odor that your livestock won't like, like a carcass. Since I don't have any carcasses, I used an alternative: Agam eggs mixed with shrimp paste.
Hopefully, it works too.