Efficiency in repelling lasts up to four months.
Active ingredients include: Fipronil 5-amino -1- (2, 6-dichloro-4 [trifluoromethyl]phenyl) -4- (1,R,S)- (trifluoromethyl0sulfinyl) -1H-pryazole-3-carbonitrile 0.29% inert ingredients 99.71%.
Fipronil works as a nervous transmission interruptor, which causes quick death to fleas and ticks. It is proven to kills 96% of fleas for the first two hours and 100% within 24 hours. Ticks die sooner than they attach themselves to the host. Fipronil is from the new phenylpyrazole class. Very effective and can be considered safe, so long as dogs are not allergic to fipronil.
• Knockout. Performs like Frontline and is as effective, but can only be used in dogs. Active ingredients: Pyriproxyfen: 21[1-methyl-2-(phenoxyphenoxy)ethyoxy] pyridine....0.05% cyclopropanecarboxylate 2.00% inert ingredients 97.95% Also has NYLAR, which is flea growth regulator.
• Biospot. This is for topical application and kills up to 75 percent of fleas, eggs, and ticks. It also is a good repellant of mosquitoes and works for about a month. Temporarily, at times, it turns white hair to yellow. This can not be used in cats and contains permethrins and IGR.
• Proban (cythioate) and Prospot (Fenthion). While not to be used in cats, they are widely used in dogs. This is absorbed by the bloodstream and fleas die due to the poison that is present in the blood. For it to work, it requires the bitting of fleas. There are certain conditions to be considered though. You are injecting a small dose of poison into your dog’s body and side effects are not known. Then this does not help if a dog has flea allergy, and can not risk to be bitten.
Generally fleas abound during the summer months, when it is their breeding season. These commercial products can greatly help in fighting heavy flea infestation and needed where severe invasion occurs. However, it is always best to consult with your veterinarian as the choice of flea control will greatly depend on your life style.
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