Cedar Blocks

Cedar Blocks vs. Moths: An Effective Natural Repellent?

cedar blocks

When it comes to protecting your cherished garments from the damaging effects of moths, the traditional use of chemical mothballs raises concerns over safety and odor. Enter cedar blocks, a natural alternative that not only offers a pleasant aroma but also claims to ward off these pesky insects. But how effective are cedar blocks really at keeping moths at bay?

In this blog, we delve into the effectiveness of cedar blocks as a natural moth repellent, ensuring your clothes stay pristine and moth-free.

Cedar Blocks Enhance Closets

Understanding Cedar’s Moth Repellent Properties

The Natural Oils of Cedar

Cedar wood is renowned for its natural oils that emit a scent which is pleasant to humans but repellent to moths. These oils contain chemicals such as cedrol, which may deter moths from laying eggs.

  • How Cedar Works Against Moths: The aromatic oils disrupt the pheromones of moths, confusing them and deterring their approach.
  • Effectiveness Over Time: Cedar’s effectiveness can diminish, however, requiring maintenance for lasting protection.

Refreshing Cedar Blocks

To maintain the effectiveness of cedar blocks:

  • Sanding Cedar Blocks: Lightly sanding the surface of the blocks every few months can revive the scent.
  • Cedar Oil: Applying cedar oil to the blocks can also help replenish their moth-repelling properties.
Sanding Cedar Revives It’s Power

Comparing Cedar Blocks to Other Moth Repellents

Cedar Blocks vs. Mothballs

While mothballs are effective, they contain chemicals like naphthalene or paradichlorobenzene, which can be hazardous to health and impart a strong chemical odor.

  • Safety and Health: Cedar blocks offer a safer, non-toxic alternative for homes with children and pets.
  • Environmental Impact: Unlike chemical mothballs, cedar is a more environmentally friendly option.

Here’s a detailed comparison of cedar blocks and mothballs on health and environment.

Other Natural Alternatives

Other natural alternatives include lavender sachets, peppermint oil, and cloves. These, like cedar, provide a pleasant scent and some level of moth repellency.

Explore other natural alternatives for moth repellency.

What Experts Say

According to Inverse, while cedar blocks are effective initially, their potency can decrease over time unless properly maintained.

Read expert insights on the effectiveness of natural moth repellents.


Cedar blocks serve as a pleasant and natural alternative to chemical moth repellents, but they require maintenance to remain effective. By understanding how to care for and rejuvenate these natural defenders, you can ensure your wardrobes stay both fresh and moth-free.