I think the best redirect would be to convince them to "self-pasteurize" their milk. You can make an entire ecosystem of grift products on the best home pasteurizers to avoid harmful toxins or whatever the current buzzword is.
Can't wait to hear some idiot say something like "I never get sick from raw milk. I just put the container in boiling water for a few seconds. So much safer than pasteurized."
I damn near throttled someone who said that to me. They said the COVID vaccine was too risky, and they'd rather get a real immunity from actually getting it.
If they used this as their argument I'd be kinder to them, it means they want what a vaccine can give, so it's just about MISSING information, not MISSinformation.
Sadly not the case. "The vaccine is untested, as any immunity that a vaccine gives you will be weaker than what you get from natural immunity. Your immune system will never get stronger unless you let it work. I'm gonna get COVID eventually no matter what, so I may as well get the good immunity without risking the side effects of the vaccine. It's just a cold anyway, so I'm not risking much".
That whole corner of the family is very ignorant and susceptible to misinformation. I'm just some guy who can explain things and show them CDC or WHO sources, which are unreliable and suspect. I don't have the gravitas of a very confident tiktok creator or a podcaster.
I'm also a little salty at them because they were all excited to see my new twins until I asked if they could be up to date on their vaccinations since they were in the NICU (premature, all good now). Variously "my family will not get the COVID shot", "the flu shot will give me the flu", and "I shouldn't need to get a Tdap booster, I'm tired of needles".
But you could also use it to separate them from their money, which is an even greater good.
Also, it potentially keeps the people in their care who have no agency from getting listeria, which is up there with lining your pockets via virtuous con artistry in terms of moral virtue.
You incorrectly assume the grift products have to actually do anything. Just give them a few lights and a little fan at the back which spins for a few minutes to make it sound like it's doing anything.
Can be super cheap to make, it doesn't even need a heating element!