Fipronil is an insecticide which disrupts insects central nervous systems, and is the portion which kills adult insects. Methoprene is an insecticide which disrupts the reproductive process, preventing larvae from growing into adults. The reason for the variation between the formulas is not clear, and there is not sufficient unbiased and non-anecdotal data to say what effects such slight mis-dosing can cause to the pets.
Frontline, Revolution and Advantage can all be safely used on cats and dogs interchangeably, as the ingredients are identical, you just need to know the correct doses.
Frontline Plus for Dogs contains (fipronil 9.8% and S-methoprene 8.8%)
whereas
Frontline Plus for Cats contains (fipronil 9.8% and S-methoprene 11.8%)
Dogs are given a dose of 0.067ml of Frontline solution per kilogram of bodyweight.
So a 10.0kg dogs need a dose of 0.67ml
an 6.0kg dog only really needs 0.40ml
ALL cats are given a set dose of 0.50ml
The Frontline Plus for cats formula contains exactly the same concentration of Fipronil (the main ingredient which kills fleas, ticks, and lice) as the Frontline Plus for dogs formula.
The only difference is the cat version contains 3% MORE of the ingredient methoprene than the dog formula.
Giving your dog a tiny 3% more methoprene will not harm it. Look up the toxixity of methoprene online for yourself and see.
Methoprene simply acts as a juvenile hormone analogue in fleas, it keeps the fleas "young". The flea larvae are prevented from completing the metamorphosis into adults and subsequently die.
Other Answer:
Frontline for cats and dogs only differs in the concentration of S-methoprene - which cats need more of. The weight differences may impact on the effectiveness of frontline.
Frontline for Dogs is not dangerous to cats (or Frontline for Cats to dogs). They are simply different doses of the same active ingredients (because of the species differences). Frontline for Dogs will still work on cats - but not at the same efficiency (towards the end of the month) as Frontline for Cats. Therefore you should always use the correct product for the species.
Absolutely NOT- only use medication for dogs for dogs and medication for cats for cats!
Use Frontline on your dogs and cats to prevent fleas. I used frontline on Fido yesterday.
No, Frontline is for fleas on dogs and cats. Horses get Lice. Use lousepowder. Frontline is likely it orritate the horses skin.
I would not recommend it. I do know you should never put the canine Frontline on a cat. You should use the canine Frontline for the dog according to his weight and the same for a cat, use feline Frontline only. Why mix them?
Check the front of the packet. Some of the spot-ones will say they are safe for dogs and cats. Some are definitely not safe for use on cats, e.g. Advantix.
The cost to use Frontline on cats can vary. Typically, the cost to use Frontline on cats ranges from the prices of fifty dollars to one hundred and sixty four dollars in the US.
No. Frontline products should be used on the specified species. This is because one of the main components of Frontline, S-Methoprene is needed in a higher dose in cats. This is because it does not last as long in a cat than in a dog. So, if you used Frontline for dogs on your cat, it may not be as effective. However, this higher dose is still safe to use on a dog - so you could use Frontline for cats on a dog.
Frontline's two products for cats are Frontline Plus, a flea/tick repellent, and OraVet, product for protecting pets' teeth. Frontline also sells products for dogs, like Heargard, which protects against heartworm.
NO, but you can use frontline plus for kittens on a ferret
According to the documents on the Frontline website, Frontline Spot-On treatment is deemed safe to use on pregnant cats and kittens above 8 weeks old. If you are unsure, contact your vet.
It depends on the age of the puppy. But if i were you i wouldn't put flea treatment on them until they are at least 8 weeks of age. I use frontline plus on all of my dogs and cats.