Should be fine. Be aware that this is a respiratory irritant so mask up when using. I don't know how much you should apply to get rid of the weevils though, so there might be some trial and error.Is this the right one? HARRIS Diatomaceous Earth Food Grade, 4lb with Powder Duster Included in The Bag https://www.amazon.com/dp/B072J8Z28F/ref=cm_sw_r_apan_glt_fabc_DJ8NF1K4VPBAHHMAQK6D