except a number of those were not from sketchy sources so much as the supply chain is itself sketch

that includes the do it yourself juice

so unless you are doing something dry and even then tests on a number of weed products show really bad chemicals in a number of legit dispense products

so yea unless you are growing the shit yourself the industry is kinda the wild west still atm

but yea sig makers have been caught a number of times doing this shit too, they are just more regulated atm