What are the active ingredients in flea treatments?

Fipronil only treatments

Fipronil, the unsung hero of many flea treatments, takes centre stage in formulations designed to tackle these persistent pests head-on. But not all flea treatments are equal and Fipronil alone won't stop a flea infestation. Let's get to know fipronil-only treatments:

• How Fipronil works

  Fipronil is a potent insecticide that disrupts the central nervous system of fleas, ultimately leading to their demise. When applied topically, it collects in the oil glands of your pet's skin, providing sustained protection against fleas for several weeks.

• Pros

  • Broad-spectrum action - Fipronil is effective against adult fleas, ticks, and chewing lice, making it a versatile solution.

  • Residual effectiveness - Fipronil continues to offer protection even after the initial application, preventing reinfestation.
    

  • Immediate relief - Kills adult fleas within 24 hours.

• Cons

  • Limited flea life stage coverage - While effective against adult fleas, fipronil alone does not address other life stages, such as eggs and larvae, therefore your pet is not fully protected and the fleas can come back. Remember! 95% of fleas live in the home environment in immature flea life stages. Flea eggs are 50% of the flea population. Flea larvae make up 35% of the flea population. So it’s crucial to kill all life stages, not just the fully grown fleas!

Fipronil and (S)-methoprene

Enter the power couple of flea treatment – Fipronil and (S)-methoprene. This duo combines the immediate knockdown power of Fipronil with (S)-methoprene to disrupt the flea life cycle and stop fleas from coming back. Here's everything you need to know...

• How Fipronil and (S)-methoprene work together

  While Fipronil takes care of adult fleas, (S)-methoprene steps in to address the younger generation. (S)-methoprene is an insect growth regulator (IGR) that interferes with the development of flea eggs and larvae, preventing them from reaching adulthood - and halts fleas in their tracks!

• Pros

  • Comprehensive flea control: Fipronil and (S)-methoprene together offer an all-inclusive approach, targeting adult fleas as well as breaking the flea life cycle.
    

  • Long-term prevention: (S)-methoprene provides extended protection by inhibiting the growth of new flea generations.
    

  • Affordable: Most flea treatments with these active ingredients can be purchased over the counter for an affordable price, compared to vet prescription treatments.

• Cons

  • Not every pet with get on with topical treatments: Due to the application process, spot on flea treatments might not be the best type of treatment for your pet, depending on their lifestyle. For advice on finding the best treatment for your pet, click here.

Other treatments

• Imidacloprid

  Another active ingredient which is known for its quick-knockdown action against adult fleas, however, it doesn’t kill ticks!

Prescription strength from your vet

Prescription-strength flea treatments i.e. those suggested by your vet often contain a combination of potent ingredients, tailored to address specific infestations or meet the unique needs of individual pets. Here's the good and bad about them...

• Ingredients

  • Selamectin: Effective against fleas, ticks, heartworms, and other parasites.
    

  • Fluralaner: A newer ingredient that provides extended protection against fleas and ticks.

• Pros

  • Customised formulations: Prescription-strength treatments can be tailored to address multiple parasite concerns.
    

  • More powerful active ingredients: Due to licensing, a vet can prescribed treatment that is stronger to kill fleas and their eggs. However, not all pets especially those with sensitive skin, get on with the stronger chemicals.
    

  • Specialised solutions: Ideal for pets with specific health considerations, such as allergies to certain chemicals.

• Cons

  • Requires vet prescription: These treatments necessitate a prescription from your vet, meaning you can't by these immediately which slows down your journey to get rid of fleas, fast.
    

  • Costly: These prescriptions usually cost a lot more per treatment because of their active ingredients and added fees put on by vet practices.