Another method is to clear with smudge/sage as advised, then take tiny crystal bowls (or any other glasscontainer) and fill with a tiny bit of salt. I like the tiny amethyst bowls, but you can use anything that is not porous or plastic. Sea salt or higher quality is best. Put a tiny bowl (a couple of centimeters in diameter is large enough) in the corners of the main rooms, so that they form a grid similar to the crystals you put outdoors. Or, use diagonal corners. So, for example, if you put crystals at N-E-W-S points, you could put the salt bowls in diagonal cross-quarters to amplify the grid indoors as well as out. Change the salt every 28 days or so for 6 months. Then, you can remove them if you want to. If you have companion animals, be sure to put the salt bowls where they will not be disturbed.