Firstly I want say that all grain items made from various method to use for consumer within 6 month from packing, normally we used as per, but important is to prevent by any means.Silver coin AATA have balanced nutrion which gives us delious in food.To consume that brand AATA means energy for family members.Before using Silver coin brand my family used Bal bhog Attafor a long time , no problem we found in previous brand but one drawback I found that is some insects developed if AATA not used for 12 to 15 days continue.Some can you see but micro size bacteria you cant see.So I can suggested everyone who used AATA in home should be Silver coin brands or those have preservation from insects.Generally Fungus and protozoa is cause to developed insects.Prevtion is must.