put them in the dry pellet before you put them in the net.
The smaller the pellet, the better, it wicks away the moisture.
1/2 kg of boilie to about 3 kgs of pellet.
(Too many boilies and it stays damp.)
Keep rotating them for about 3 or 4 days and when they are no longer damp to the touch, then put them into some kind of netting.
(I use the small white washing tablet bags)
and then hang them somewhere dry.
An airing cupboard is ideal, but unlikely to be allowed in most households, so the shed or the garage will suffice.
Don't pack the nets too tightly and keep giving them a 'jiggle' every day and after a week they should be totally moisture free.
You can then give them a light sprinkle of flavour or glug (providing it's not water based) and they will last indefinitely.