definitely going to check that outOr go to your local park/forest/nature reserve and capture ladybugs. They EAT spider mites. It's the coolest thing to watch.
i thought of tea tree oil, we keep it around the house with 3 kids in public school lol. I googled but didnt find cannabis specific info on it. also it really stinkshow about local drug store? Tell them your kid has head lice. With a bit of luck they will give u something containing the ultimate spider mite killer pyrethrin. But then maybe he can't find the drug store either...