Hi. My 16 month old has really fishy smelling urine but no other symptoms. Have been asked to collect a sample to get tested. I'm figuring sitting him on the pot and waiting for him to go it the best bet but easier said than done. Can I use any old container to collect in as long as it's been sterilized etc. Could I wait till I find a puddle then syringe it up? Any top tips? Help much appreciated.