Why is Citrus a natural pesticide?

Can Pesticide used for roaches harm humans?

• They sprayed pesticide everywhere at my friend's home and everyone left to go somewhere else so the pesticide wouldn't harm them. I had to go in to get my backpack and so I went in for maybe 20 seconds. I held my breath and covered my nose and mouth with my black tee. I'm just wondering, can pesticide still harm you that way?? I "might" be overeacting but I feel sort of different ever since being in there.

• Answer:

  ALL pesticides can harm humans. And they really don't do any good for roaches, since they carry their eggsacs on the underside of their body, and the eggs are not killed by poisons. If you didn't breathe any of the pesticide, you're probably fine.