Which is better: Reftamid or Gardex for ticks? - briefly
Reftamid typically achieves quicker tick knock‑down, whereas Gardex delivers longer‑lasting residual activity. Consequently, Reftamid is preferable for immediate control, while Gardex is better for prolonged protection.
Which is better: Reftamid or Gardex for ticks? - in detail
Reftamid contains the active compound amitraz, a formamidine acaricide that interferes with octopamine receptors in ticks. Its mode of action provides rapid knock‑down of attached parasites and persistent activity for up to 30 days after a single topical application. Field studies report efficacy rates of 85–95 % against Ixodes ricinus and Dermacentor spp., with documented reductions in tick attachment and feeding. Amitraz is also effective against other ectoparasites, such as mites, which can be advantageous in mixed‑infestation scenarios. However, amitraz may cause transient sedation, bradycardia, or hypersalivation in sensitive dogs, and it is contraindicated in animals with known neurological disorders.
Gardex utilizes the synthetic pyrethroid flumethrin, a sodium‑channel modulator that induces paralysis in ticks. Laboratory trials show mortality of 90–98 % for the same tick species within 24 hours of exposure, and residual protection lasting 21–28 days. Flumethrin exhibits a lower incidence of systemic side effects, making it suitable for young or debilitated animals. The formulation also includes a synergist that enhances penetration through the tick cuticle, improving efficacy against resistant populations. Drawbacks include a higher potential for environmental accumulation and reduced effectiveness in areas with documented pyrethroid resistance.
Key comparative points:
- Efficacy: Both products achieve >80 % control; Reftamid offers slightly longer residual activity, while Gardex provides faster kill rates.
- Safety profile: Gardex presents fewer systemic reactions; Reftamid requires caution in neurologically compromised pets.
- Resistance risk: Amitraz resistance is emerging in some regions; flumethrin resistance is less common but increasing with extensive pyrethroid use.
- Application frequency: Reftamid typically administered monthly; Gardex may be reapplied every three weeks in high‑risk zones.
- Cost: Reftamid generally priced lower per dose; Gardex may be costlier due to added synergist.
Decision criteria should weigh the animal’s health status, local tick species prevalence, documented resistance patterns, and owner budget. For dogs with no contraindications and where long‑term protection is prioritized, Reftamid may be preferable. When rapid tick elimination and minimal systemic effects are essential, Gardex offers a compelling alternative.