I just got a very creepy and disgusting Halloween surprise--our brand new (unopened) bag of Swheat Scoop litter was infested with moth larvae! Yesterday, Bob and I started noticing small caterpillers or worms crawling in our workout room where we keep the litter. We killed the ones we saw using Cedarcide spray and thought we were done. Later that day, we went back into that room, and there were more larvae... EVERYWHERE!! So gross! They were crawling up the walls and all over Bob's folded workout clothes in the closet. We couldn't figure out where they were coming from. Fortunately, our apartment complex had an exterminator on the property spraying for ants and we called him in. When he opened the bag of SS, a dozen moths few out and we discovered where the infestation was. I called Petco, since we still had the receipt from when we bought it. They know about the problem--they said they've had problems with Boll Weevils, too, in SS. Petco obviously didn't want the bag returned, but they did request we bring them the UPC code. They'll give us store credit for a different brand. They said that even though "The World's Best Cat Litter" is corn-based, too, their bag is tough plastic and the bugs don't burrow in, so maybe we'll go back to that. Anyway, thought I'd give y'all a heads up. No more Swheat Scoop for me!!