FRONTLINE TRI-ACT®
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FRONTLINE TRI-ACT® is a spot-on treatment licensed only for dogs that contains fipronil and permethrin. It kills fleas and ticks faster than other non-prescription flea and tick treatments for dogs in the UK retail market.* It also provides long-lasting protection against flying insects (mosquitoes, biting flies and sandflies) as well as fleas and ticks, while also preventing home flea infestations.
FRONTLINE TRI-ACT® contains two active ingredients:
• Fipronil, which kills fleas and ticks
• Permethrin, which repels ticks and flying insects and works in synergy with Fipronil.
Do not use on cats or rabbits.
What does FRONTLINE TRI-ACT® do?

Starts killing fleas in just 5 minutes8
Kills newly arriving fleas within 6 hours‡


Prevents flea infestations in the home by killing fleas before they can lay eggs‡


Kills newly arriving ticks within 6 hours‡


Repels ticks for 4 weeks
Helps reduce the risk of tick-borne diseases
Repels flying insects for up to 5 weeks to prevent them from biting
† Compared to next leading non-prescription competitor brand and when used monthly
‡ When used monthly or from 2 days after first application