Storing potatoes in builders bag

Hi
I don't have anything more suitable for storing my potatoes than a large builders bag at the moment. The kind used for carrying sand/rubble etc.  What do people think? Bad idea? OK?
Thanks
Steve

'Eggs in one basket' springs to mind .

On the farms they are stored in wooden crates but the barns are temperature and humidity controlled .

Would not recommend using builders bags. They will just rot in there.
Hessian sacks work well and been using the same ones for a good decade.
You do need to check them still, just in case you have a rogue one.
Mine sit in a small shed from August/September to late spring and early Summer.
I always just before storing my new batch wash the bags on a 40c wash in the washing machine and leave to dry outside. They are still after all these years as good as new.
Why not also freeze a load of the potatoes as mash, roast and chips for use during those summer months when we have no maincrop.

Amazon have loads for sale and work out about £1 a sack in quantity of 5s and 10s.

Make friends with someone who works in the veg section of your local supermarket    The plastic bags of potatoes they sell come in bigger strong paper sacks and these only get chucked in the paper and cardboard recycling.  I have been nabbed several times recently while putting out the spuds.

Similarly, if you want net bags for onions, ask nicely.  Some of the stock also comes in these.  You can also try at the garden centre.  A lot of the loose bulbs sold there come in these 

Thanks for all your replies.
I've ordered soem hessian sacks.
All the best
Steve