What is a kind but effective way to wake up my brother?
Set a alarm in his room on a higher place with a weird alarm tone,i used to do it in high school :P
Water on his face ^.^ lol
Why are you even worried about this? It's your mom's problem.
Put his hand in warm water, and when he pees the bed he will wake up .
Put the T.V. on, he will wake up about 5 to 10 min. later. It has worked for me.
Why did you use a tank for your username?