Yes, cedar blocks are effective at naturally repelling clothes moths, silverfish, and other fabric-eating pests. The natural oils in aromatic red cedar emit an aroma that drives insects away and camouflages the scent of keratin (which bugs are drawn to). However, they do not kill existing bugs or larvae.
Cedar blocks absolutely work, but their effectiveness depends on proper usage and maintenance. They do not kill existing bugs; instead, they are a natural, chemical-free way to deter pests and freshen storage areas.
Cedar may not be the definitive moth-killing solution you imagined, but it is effective at protecting your clothing from hungry moths. You can use cedar in combination with neem oil and other natural repellents to keep your home moth-free.
Cedar blocks will physically last for years, but their active scent-emitting properties fade after about 3 to 6 months. The wood itself does not expire; its insect-repelling power simply diminishes as the aromatic oils evaporate into the air.
How long does cedar repel bugs? Cedar's effects can last several months, but refreshing the wood with Cedar Ward or lightly sanding it helps maintain its bug-repelling potency.
Spiders absolutely hate the scent of peppermint, citrus (lemon/orange), eucalyptus, and white vinegar. Because spiders "smell" and taste with sensory organs on their legs, these strong odors overwhelm their systems, confusing them and deterring them from building webs in your space.
That depends on your definition of hard, but termites, bedbugs, and cockroaches top the list. In the pest control world, the top most challenging cases are those that involve severe infestations of termites, bed bugs, and cockroaches. Each of these sends shivers down most people's spines, and for good reason.
Deterioration Concerns
Although cedar lasts a long time under ideal conditions and treatment, it tends to degrade more quickly when it's used for ground-level decks, and if it's shaded, it will slowly dry out. Again, simple maintenance and re-sealing solves these problems.
Cedar Blocks smell pleasant and the natural oil in the wood repels moths and other insects. Cedar also helps to control moisture reducing mold and mildew. Charcoal Bags absorb and neutralize odors as well as reduce moisture. Using a combination of these two methods provide a strong protection for your stored clothing.
The most effective way to repel and prevent moths is to combine physical cleaning—washing or dry-cleaning infested items and thoroughly vacuuming closets—with targeted deterrents. The top repellents vary based on your needs, leaning heavily on natural options and chemical controls.
Yes, cedar blocks can safely touch most clothes. Because cedar is a natural, chemical-free wood, its oils won't damage fabrics and are great for repelling moths. However, following a few best practices will prevent issues:
Cedar wood—especially Eastern red cedar—naturally emits oils that repel moths, silverfish, and other pests. It doesn't kill insects but acts as a natural deterrent, making it a safer and more pleasant-smelling alternative to mothballs.
Contact with combustible material may cause fire. Irritating to skin. May cause SENSITISATION by skin contact. Vapours may cause drowsiness and dizziness.
Cedar naturally repels a variety of bugs—most notably mosquitoes, ticks, fleas, moths, ants, and chiggers. Its effectiveness comes from aromatic hydrocarbons like thujone and cedrol, which interfere with insect pheromones, disorient pests, and can even dissolve the exoskeletons of vulnerable insects and larvae.
Cedarwood
Cedarwood's potent aroma is an effective deterrent against mice due to cedrine, cedrol, and thujopsene compounds found in cedar oil, that create an unappealing scent for rodents. Strategically place cedar blocks or shavings around the house, particularly near entry points, to discourage mice from entering.
Sand your cedar
Make sure the interior of your cedar chests and closets is sanded every few years. Sanding the wood will bring out the aroma of the oils below the surface of the wood. If the wood is really dry, consider sanding and applying some cedar oil.
To get rid of moths permanently, purge the infested source, deep clean the area, and kill any lingering eggs or larvae. Trap remaining adult males using pheromone traps and store vulnerable fabrics and dry foods in airtight containers to prevent future infestations.
Moths and their caterpillars are a vital food source for a vast range of wildlife. Key predators include bats, birds (which feed thousands of caterpillars to their chicks), spiders, frogs, lizards, and smaller mammals like shrews and rodents.
Moths absolutely hate strong natural scents—like lavender, cedar, and rosemary—as well as bright light, regular vacuuming, and cleanliness. They thrive in dark, undisturbed, and musty environments where their larvae can feed on natural fabrics and stored foods.
Cedar naturally repels clothes moths due to the presence of natural aromatic oils (specifically sesquiterpenes and thujone). These oils disrupt and protect in three main ways:
The characteristic "old age smell" is scientifically known as nonenal (or 2-nonenal). It is a chemical compound produced when the skin's natural oils and fatty acids break down and oxidize as we age.
Wealthy homes typically achieve their luxurious scents by prioritizing subtle, clean, and consistent aromas over overpowering synthetic sprays. The secret isn't a single product, but a combination of strict daily ventilation, professional-grade cleaning, and high-end scent layering using natural diffusers.
Western Red Cedar
Native to the Pacific Northwest and the original Cedar wood used in traditional Native American cooking. Western Red Cedar is delicious and non-toxic. This is the safest and most recommended for Cedar plank cooking.
Cedar trees are everywhere mentioned with admiration in the Old Testament. Solomon made the cedar the first of trees (1 Kings 4:33). They are the "glory of Lebanon" (Isaiah 35:2; 60:13). The most boastful threat of Sennacherib was that he would cut down the tall cedars of Lebanon (Isaiah 37:24).
Cedar blocks are natural, chemical-free wooden blocks carved from aromatic cedar. They are highly effective for repelling fabric-damaging pests like moths, beetles, and ants, absorbing excess moisture, and acting as mild natural deodorizers for enclosed spaces.