Do I need an oxygen absorber with white rice?

Gonna put it in a sealed 5 gal pail.

Without mylar they're a waste with mylar they remove the need for co2 or nitrogen flooding

I should have mentioned it will be going in mylar.

I put them in my rice that's in Mylar. I use this link as my guide for how many to use.

https://www.usaemergencysupply.com/e...ed_amounts.htm