I can't take the credit for this one, but I was reading a copy of traditonal bowhunter and thought I would share what the writer does. After a 1st deer harvest of the year, take a 50cc syringe and a 18 gauge needle, and a refillable bottle with a cap and empty the bladder while field dressing! What do you guys thing, I will personally try this. He also mentioned he mixed it 50/50 with water and froze it, but thawed when needed and it lasted for a while.
I have heard of ppl just taking the bladder and cutting it open and putting in a bottle. Just be sure no blood gets in there as it will begin to rot and smell really bad.