Yes you can use a weedkiller to clear a bit of ground. Roundup and the like
Agreed!
But I think it is a bit early yet. If your weeds are not growing they won't take the weedkiller in!
So you might be wasting time & money!
Wait until you see new growth on your weeds.
On no account use Sodium Chlorate or that is the end of your growing season for this year! certainly for six months at least.
BTW SC is banned from this year :-\