What Bug Leaves a Brown Trail

Stink bugs tend to leave a trail of excrement behind wherever they crawl. This nasty substance may be found in long dark trails all over your windows, the walls and across your kitchen counter tops.

Do bugs leave brown spots?

When bed bugs infest, they will leave blood stains on sheets, pillowcases, blankets, mattresses, box springs, furniture, carpets, molding, and more. These stains may be red but, most of the time, they appear tan or brown. Significant staining is associated with areas of infestation.

Do stink bugs leave brown stains?

Stink bugs are known for their odors, but the uniquely shaped insect can also leave behind stains. If you try to remove the bug with your bare hand, you may notice a bronze or orange stain on your skin. … Not only is the stain hard to remove, but the smell could linger for a while as well.