I’ve had it happen before too, and I also buy the 15-20lb bags of rice. If you have a large Asian supermarket, you can find rice storage bins that are meant to hold large amounts of rice. Just make sure you are getting something that is airtight though! Not all of them are, so check for gaps and cracks on rims and ends that nothing can get in. Otherwise, recycling the old tins like popcorn etc is a pretty inexpensive option. The rice I eat now thankfully separates the 15lbs into multiple smaller plastic bags inside, which I like much better and I’ve never had grain beetles since.
Mine were grain beetles (verified by an exterminator who was in the apartment checking on something else) and definitely not rice weevils, but they are all gross nonetheless.
