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Droppings from cockroaches, squirrels, mice, bats, and birds can resemble rat poop, making it easy to confuse one for another. Mouse droppings are smaller and more pointed, cockroach droppings resemble tiny black specks or ground pepper, and bat guano can look similar but usually crumbles into powder. Bird droppings sometimes have a similar shape, but often include white uric acid deposits. If in doubt, it’s best to consult a pest control professional for proper identification and removal.

The most effective natural roach repellent is Borax with its key ingredient of boric acid and diatomaceous earth. But some homeowners may not feel like these are “natural” enough, especially since you can’t use Borax around curious pets or toddlers.

On the other hand, studies have shown that oregano oil mixtures have some of the best repellent effects, and other research indicates that catnip oil, peppermint oil, and citrus oils have notable effects on keeping roaches away. Rosemary oil has been shown to be the most effective natural oil for killing cockroaches outright.

You’ll want to locate all areas in your home that could be a potential entry point for mice, such as doors, windows, vents, baseboards, holes, and cracks in your home’s foundation. Don’t forget to check less-obvious areas like the attic, plumbing and sewers, and even the roof and gutters. If you check these spots and don’t find any signs of mice, consider hiring a pest control pro to dig deeper into potential hiding spots.

When you spray a roach, the chemicals, usually a mix of neurotoxins like pyrethroids or pyrethrins, start affecting its nervous system almost immediately. It disrupts the roach’s nerve signals, causing paralysis and eventually death. You'll often see the roach twitch, flip over on its back, and stop moving within seconds to minutes.