How can you keep nasty bugs from entering boxes in the cupboard?

Filomena Lewis
by Filomena Lewis
I went to use my rice and found small bugs in the container. So I threw hem out. Then I checkked other boxes and they also had bugs. How can I keep them from my cupboards? Have tossed out everything. Never had this with my old cupboards. These cupboards are new. Do I spray the interior? If so, with what?

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