Sorry to bother you all again with yet another question ![Smile](https://www.growfruitandveg.co.uk/grapevine/core/images/smilies/smile.gif)
I've been leaving my greenhouse door open hoping to attract bees. Only thing I seem to be getting is loads of house flies or blue bottles. How can I stop them coming in and will they do anything to the plants I have in there.
![Smile](https://www.growfruitandveg.co.uk/grapevine/core/images/smilies/smile.gif)
I've been leaving my greenhouse door open hoping to attract bees. Only thing I seem to be getting is loads of house flies or blue bottles. How can I stop them coming in and will they do anything to the plants I have in there.
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