We have lots of flies and mosquitoes here in the summer. (It is the one good thing about winter no bugs) Sometimes they are so bad I won't even go outside. The sprays kind of work but you can't use them when pregnant. I remember going for a walk when pregnant and only going about 100m before I couldn't take it any more. They were just swarming me and even if they didn't bite I would have been very stressed. I didn't find anything made much difference except mosquitoes like people who eat bananas. So I only buy them in the winter.