this is a fly trap that the israel army use. vary very easy.
you will need:
every thing the a fly likes.
Step 1: Cut
cut the bottel in the middel.
Step 2: Turn
turn the bottel upside down and slow tipe it.
put the "thing that u choose inside the bottel.
wait for the fly too come in. when the fly is in that is it!
he cant get out.