Hi everyone, I'm new to this site an find ye all fab!! I've added some FO to dishwaaher salt granules and they smell great at the minute! I've packed them in sealed bags 100g in each, how long will they last like this?? I'm hoping to make a lot more to gather up stock for a fair, will they start to sweat or will the salt just dry out more?? Also how much would you expect to pay got a 100g pack? TIA