How essential oil works — illustrated mechanism of action
Cedar oil (cedarwood oil) is one of the oldest and most effective natural insecticides. It kills by disrupting octopamine — a neurotransmitter found only in insects, not mammals. This gives it genuine selectivity. EPA 25(b) exempt with a long history of safe use.
How essential oil works — illustrated mechanism of action
Fleas (proven lethal contact), ticks (repellent + contact kill), moths (classic use — cedar closets and chests), mosquitoes (moderate repellent), ants (repellent), cockroaches (repellent, moderate contact toxicity), mites, bed bugs (repellent only — will not eliminate infestation).
Cedarcide Original (spray), Wondercide (cedar-based sprays), Cedarcide Outdoor Bug Control (granules), cedar blocks and sachets (for closets/drawers), CedarSafe closet liner panels, Vet's Best Flea & Tick spray (cedar + peppermint). Pure cedarwood essential oil.
Excellent safety profile. Non-toxic to mammals because mammals do not have octopamine receptors. Safe around dogs when used as directed. Traditional cedar closets and chests have been used safely for centuries.
Can stain light fabrics. Test on an inconspicuous area first. Strong scent that some people find overwhelming in enclosed spaces.
For fleas: Cedar oil sprays (like Wondercide or Cedarcide) applied to pet bedding, carpets, and baseboards provide genuine flea knockdown. Multiple applications needed — not a one-shot solution. Works well as part of an integrated approach with pet treatment.
For moths: Cedar blocks, sachets, and lined closets/chests are the time-tested approach. The scent repels adult moths from laying eggs. Replace or sand cedar blocks annually when the scent fades — the surface oils deplete over time.
For yard treatment: Cedar granules spread around the yard perimeter repel fleas, ticks, and mosquitoes. Reapply monthly or after heavy rain. Most effective when combined with keeping grass short and removing leaf litter.