Urine Enemas

I know aged urine enemas are highly therapeutic... but is there a limit to how long you can age it for? I have 2 - 16 oz bottles that have been sitting out for about 2 months .... and I was thinking I could add that to 5 gallons of water for my colema (home colonic system.) Anyone have any thoughts? My question is ... will 2 month old urine be too old for this use? I'd be very grateful to receive feedback from someone really knowledgable in this area. Thanks so much!!!