These are user and staff submitted hints for CSI Miami. If you have a hint or tip for this game, share!
You can also look on our forum for hints.
Basically there are no penalties for using wrong tools so keep using them until you get the right one.
You will be given more tools later in the game but these are usually for one off locations.
If you can't find the evidence, search the screen square by square. Often it may not be in the immediate vicinity where you are looking.