Just walked in to find what I think is a cockroach in my kitchen. It was lying still and I've killed it, but I'm panicking because I've looked online and it says that's usually a sign of an infestation. I live in a one bedroom upstairs flat and I've seen no other signs. I've thrown lots of bleach on the kitchen floor and I'm about to steam clean it, but what do I do? I don't know if it's come through the drains or from my suitcase which is open in the hallway with washing in because I've just got home from holiday.
I feel sick, what do I need to do? The flat was deep cleaned 3 weeks ago and we saw nothing then.