Our flat is very warm (not just lately, since about April, despite no heating
) so we keep some of the windows open pretty much all of the time. I only close them at night because I'm paranoid. As a result we keep getting various insects flying in. It's not just one or two, as I probably wouldn't even notice that. There's nothing particularly serious about it but it annoys me and I'd like to reduce the number.
So how? What deters them? We used to have citronella candles as a kid but they were for outside (we have no outdoor space) and I haven't seen any specific indoor citronella stuffs.
Or alternatively, is there some sort of thing I can hang by the window to attract them so they are less likely to fly about indoors?