Thats what you are looking for. Dust would penetrate the windows. A/Cs, exhaust fans and not only the door.

BUT for your case, you need to look for adhesive sponge strips. They come in rolls about 1 cm wide and one side is adhesive. But the quality of such things here is not good. If you somebody coming from the States, there you find good quality sponge strips.

Alternatively, you can hire a maid if you don't have.