Grandmas can be growing it in heavily contaminated soils (old motor oil, lead, arsenic, etc.), or using ‘random weed spray’ at 10x its recommended dosage, or no

Grandmas can be growing it in heavily contaminated soils (old motor oil, lead, arsenic, etc.), or using ‘random weed spray’ at 10x its recommended dosage, or not washing their hands after using the toilet and then handling veggies, etc.