Hahaha, I remember now!
I went to Italy one summer where I stayed in a village, very dry, hot weather with plenty of insects. Once I arrived, I took most of my belongings out of the backpack except for something edible and sweet, I cannot quite remember. I think it was a banana. Anyway, as you could imagine after travelling, I was tired, so I slept peacefully through the night without a thought. But before hand, I took precautions with this repellant spray that kills all insects, I hate mosquitos! So I sprayed that stuff around the room.
So I woke up in the morning rather late and my family were up and raring to go! Apparently, we were heading out for the day. So I got changed, cleaned myself and as I was about to pick up my backpack and leave I saw the horrid site as what was once my backpack. There were trails of ants between the tiles, and my backpack was covered in ants although it was rather difficult to see as it was dark navy in colour. Inside there were ants everywhere, at least a hundred. I panicked. So I quickly snatched the 'killer spray' and started spraying everything! I did kill all of the ants in the end, but I did not think about all of those corpses! To this day I still believe that there still has to be one ant stuck in there between the crevices of my bag.