I have just this morning opened two bags (both previously un-opened) of Asda Basics Self Raising Flour, both in date one being November 2012 and the other January 2013 and both bags contained so many Weevils (little black/brown crawlies) that I am suprised the bags hadnt walked off the shelf by themselves, I also found them in an un-opened bag of sugar and two boxes of Cupasoup stored on the same shelf, I have never had a problem in the 6 years I have lived in this house with any type of Weevil in my food cupboards and I do believe that the infestation was already present in the flour when I bought it, I have used the same cupboard to store un-opened dried goods since I moved into the house and always keep them clean. I havent found any of the nasty little blighters in any of my other food cupboards or any other dried foodstuff nor have I found any wandering around the cupboard shelves or back and sides of the cupboard. I have thrown out all the dried goods from the cupboard and given it and any jars/bottles a good wash down with a bleach based cleaner but how can I be 100% sure there are no more lurking about and how can I prevent reinfestation. I keep opened dried foodstuffs in AnyLock Bags which seal with a rod in a different cupboard and they are fine (believe me I have checked each and every one thoroughly) but I am worried to the point of being paranoid that they are still there or will return ..... Anyone got any tried and tested ways at keeping them out !!!