Small bugs , commonly called clover mites, can invade your residence in the spring. Recognizing them is fairly straightforward; they are brick-colored -brown, spanning just about 1/8 inch . Search for them https://pestcontrolbros.com/blog-post.php?slug=clover-mites-what-they-are-where-they-come-from-and-how-to-get-rid-of-them