Help! My trash can is full of maggots!

A horrible surprise tonight, opened my big trash can in the garage to find it teeming with maggots, there is only one half a bag of trash in it, and I don’t know what happened! A massive maggot hatch. I don’t have any bug killer, so I sprayed the whole thing with Lysol, but, they will not die! It is horrible, they are trying to get out and when I lift the lid they are falling off. Can anyone suggest something to kill them? I can;t bear to reach in and remove the bag so I can hose it out. Help!