It is not hygienic to allow your child scrabble around trash piles to find items that can be re-sold or reused.
Do not allow your child pick up food that that fell on the ground to eat. Bacteria can fasten to the food, as soon as it touches the floor.
Do not allow your child eat soil, it may lead to gastric pain and bleeding
Ensure your child washes their hands after touching soil to avoid bacteria.
Never allow your child play around contaminated, and germs infested water.