Potato sacks...should i wash them?

[kippers garden]

I used my potato sacks to store the potatoes i grew last year.  I have just looked at them and they  have some dry mud in but look ok.

My question is...do i need to wash them before i put any more potatoes in to store for the winter?

[kippers garden]

[markfield rover]

Could you turn them inside out?

[STEVEB]

cant do any harm.