I get rid of them and more keep coming back! I can't find anything dead, I've bleached the drains, sniffed everywhere to see i I could find anything - nope and every few hours, another swarm of flies shows up. This is so disgusting!

Could possibly be "cluster" flies. Cluster flies are a little larger than the common housefly and moves sluggishly. They can enter a home through the tiniest of cracks under the eaves and around windows or through gaps in the siding.

I have experienced them once. First I noticed one or two flies then several and they kept on coming! This was in the master bedroom/bathroom on the first floor. One thing I did was put masking tape over the outlets and checked everywhere else for any gaps or cracks in the rooms. This stopped their entry. Whew!

Ohh Thank You Vendee! I'm so tired of swatting them and terrified of opening something to a unpleasant surprise. They are around the corners of the windows - that is why I opened the windows in the first place - the fan them out with a towel. Now, I just want them dead and gone.