What about what this wein mann member said over here http://www.survivalmonkey.com/forum/gear-reviews/12039-vacuum-sealers.html, "For dry packing 5 gallon buckets. I use a small vacuum pump with a 1/8 inch plastic tube and a common clothing iron to seal the mylar bags. I place bay leaves and a O2 absorber in the bags prior to the sealing." This advice seems logical to me since bay leaves would discourage grain pests and why should we purchase a sealer that uses proprietary bags or a more expensive unit capable of sealing mylar. Has anyone used this method of removing air with a hand pump then sealing the bag with an iron instead of buying an expensive vacuum sealer?