DONT leave it in your bag....within a couple of days it ll fur up like some sort of new life form [xx(][xx(]
It seems to go off very quickly, probably the bread element in the groundbait.
I dont even mix mine up before the day anymore, just mix enough up on the bank to last a couple of hours and mix more up if needed. Mainly due to during hot weather, it goes a bit cakey, and a skin forms on the top, so keep it covered.
i split amount i make up into 2 balls and wrap these in cling film and store in a old ice cream carton and only take out 1 ball at a time from cool bag and keep wrapped in cling film to keep damp and soft any i don,t use goes in fridge for next week or frozen if not going for a bit i always make paste up the night before and put in fridge overnight as this keeps in moisture better i use ringers bag up paste and always add about 5mm more water than marked level hope this helps