Having had the fun of finding cockroaches scooting in and out of the septic tank, and scuttling about in the home, I have decided to try to control them as best as I can. Am I right in thinking that the Municipality would come out and spray the drains, or is that no longer the case? When I looked in the tank, there certainly were plenty of roaches. I don't mind them too much, but of course would prefer not to have them as house guests.
I'm in the UK right now, so can't see if they are still around. I have read that roaches are more of a problem in the summer, so am I best to leave the spraying (if indeed I can get it done) until next year? If the Municipality don't do it, I know that there are firms who will.
Lastly, if I get the drains sprayed, does it mess up all the good bacteria that keep the septic tank working correctly? I also don't want to kill other insect life if I can help it - there are lots of little praying mantis in the garden, which I rather like.
I know about keeping the floors clean, putting away food, and spraying Biokill on areas where they may go. If anybody has any further advice for me, I would be most grateful.
I read online about somebody that had a tarantula living under the sink, which did a marvellous job of eating the roaches apparently

