I keep my basmati rice in its original bag, with a clip holding it shut, inside a ziplock bag. I used up the last of the rice today. When I was rinsing it, I noticed that one grain of rice was black and immediately floated to the surface. It turns out this was not a grain of rice at all, but a miniscule (dead) beetle! It must have been packaged with the rice, because it certainly didn't come from around here. Is this normal? I can't bring myself to prepare that rice and will have to open a new bag (and get a new Ziplock bag). Am I over-reacting?