Others can be dangerous if swallowed.

Some essential oils can also be toxic to pets, particularly cats and dogs, depending on the substance and exposure.

Never assume that “natural” means “safe for everyone.”

If you have children or pets, research a product carefully before using concentrated oils as pest repellents.

The Best Approach Is a Combination

If you want fewer pests in your home, you don't have to choose between plants and practical pest control.

You can use both.

Grow aromatic herbs such as mint, basil, rosemary, or lavender for their culinary or decorative value.

At the same time:

Seal entry points.

Keep food stored properly.

Fix leaks and standing water.

Clean crumbs and food residue.

Remove clutter.

Repair damaged screens.

Keep garbage sealed.

Address infestations at the source.

This approach is much more realistic than expecting one plant to eliminate every pest.

The Bottom Line

Plants such as mint, lavender, rosemary, basil, lemongrass, catnip, and chrysanthemums contain aromatic or naturally occurring compounds that have been studied for effects on various insects.

But the viral promise that putting these plants inside your house means you will “never see mice, spiders, or insects again” is not supported as a general rule.

A living plant is not the same thing as a concentrated insect-repellent product.

If you enjoy these plants, absolutely grow them. They can make your home smell great, provide fresh herbs, and add a beautiful touch of greenery.

Just don't depend on them as your only pest-control strategy.

The real secret to a pest-resistant home isn't one magical plant. It's making your home difficult for pests to enter, feed in, and live in.