What is in this stuff!

Ok, I have done and seen some interesting things and I promise I will go those posted very soon.  But here is a short note about bug spray.  I bought a local insecticide called Baygon.  The can says its for flies, mosquitoes, and cockroaches.   Its effective against ants too.  Here is the thing.  The instructions say not to wipe up the residue because it will continue to control bugs.  So, last week I sprayed so cockroaches by my front and back door.  And this week, more roaches are getting in, walking over where I sprayed before and just dying – almost a week later.  I am a bit scared about what chemicals are in that spray can.