I've always had heaps of problems with the seals on vac bags popping open with time even though I've bought good quality ones. Maybe I'm just over stuffing them?

But I have heaps of camping clothes, knitting yarn etc. stashed in plastic tubs in our attic. I just pop a couple of camphor sachets in each box and try to check them every 6 months or so but I've never had any problems. I've had more mould and moth issues with things in wardrobes to be honest. I've also found the plastic carry bags some pillows come in are great as they're see through plastic but with fabric sides so they still breathe.