My husband just bought 30 sacks of mixed whole grains, wheat, corn, peas etc. Those are in there But so are weevils you can see them and hear them if you put your ear to the sacks, YUCK ! This feed is for his racing pigeons so unlike chickens who would not mind bugs The weevils undermine the nutrition of the feed for racing pigeons. Any way Ideas on how to get rid of these bugs? Returning the feed is not an option Thank for any ideas !