Hi
Here are a few things you could do:
1. What u need to do is... .put the rice scattered on a piece of paper/cardboard under a
hot sun.. shine it for few hours.. the bugs will be killed.
2. Another way to prevent that, is put the rice in
fridge even before they appear. if they are already in the packet, then put some
dry chili in. my grandma did that and it works.
3.Or else...I suspect its more of what you have close by that's the cause of the weevils rather than buying bad rice.
Check the surrouding area where you store the rice. If you store flour, grains or beans close by, the weevils could be from these items. Get rid of the items and clean up the area.
You need to clean up at least 2 to 3 times to totally get rid of the eggs. wash out your rice container as well.
In the meantime, sun the rice to get rid of the weevils. Place a handful of dried chillies in the rice container with your rice after that.
These tips am sure will help...Do try them and let me know the result...
Regards...