Preserving grocery items (Rice/Wheat flour etc)

https://www.youtube.com/watch?v=JBxSHCYuzW8 Flour
https://www.youtube.com/watch?v=_WtLyJNV6vQ
https://www.youtube.com/watch?v=RRkrnPaCScQ Rice
https://www.youtube.com/watch?v=6BQaPQE1fKU Rice

https://www.youtube.com/watch?v=eu369ThnPrg Rice

Neem leaves/ stick, saidhava lavana (big), turmeric.