A few drops of eco-friendly washing up liquid into 250ml/ (1/2 pint) of water and spray just before lights out. This'll stop 'em feeding.
Get some neem oil...add this to your spray.
There's a shed load of shop sprays to choose from as well.
Don't stress my man!
![Wink ;) ;)](/styles/smilies/icon_wink.gif)