For the past few days, our house has been plagued with flies. Small ones (I'm not an expert. They are small and black). Not bluebottles.
Our HV zapper seems useless. And we're not big fans of flyspray.
Obviously we have windows open (with nets).
Just seems to be more than usual ... I know it's probably an overactive imagination (too much CSI) but I have this worry there's a dead body nearby ....