The last couple of weeks, I've noticed thes tiny bugs at all of my windows in my house. They were at every window even the ones upstairs. The bugs were also in my bathroom/bathtub. They are so tiny that it looks like a dot just crawling around. I've sprayed and sprayed and I can't get rid of them. They are only inside of the house. I've noticed also that they are around the baseboard too. How can I get rid of them? What kind of bugs are these? Where do they come from?