My husband and I have discovered a simple way to test for ketones in our 15-month-old daughter and I wanted to share it with whoever can use the information. Initially, we were using the suggested "cotton ball" in the diaper method - so tough to predict when she would urinate, etc... However we have since realized that if we start to draw her a bath or even let the tub water run warm and have her stand on our tile bathroom floor without her diaper on she will automatically begin to wet. I try to strategically place a wider rim plastic bowl so I can catch some urine and then test from there. So far we have had great luck with this method. I have at times put her hand under the faucet to feel the water if she does not seem to respond right away and that has seemed to help.