Flies in the house are usually the result of egg laying by a single blowfly, If you can watch carefully and swat the blowfly before she lays eggs you can prevent a lot of trouble!
I would like to know how to get rid those pesty little sink/drain flies. I've tried baking soda and vinegar, drain cleaners and put plastic over the drains.
leave a open container of vinger out in the open
Hang fly strips near your doorways, a keeping doors or unscreened windows open as much as possible and keep a fly swatter handy!
Flies in the house are usually the result of egg laying by a single blowfly, If you can watch carefully and swat the blowfly before she lays eggs you can prevent a lot of trouble!
I agree with Fly paper. I hang one in my attached garage in the summer because my garage door is open a lot. Give it a try.
Here is a post I wrote that might help you https://chascrazycreations.com/irish-spring-soap-and-flies/