Johnson's announce a major new launch in April of their 4fleas Spot-on for Cats and dogs This dual action flea control is exclusive to the pet trade and is now part of the award winning 4fleas range Kills on contact � no need for fleas to bite Our fastest acting Spot-on Stops fleas biting in 3 � 5 minutes Kills flea larvae within 20 minutes of contact in the area around your pet including their bedding resting areas etc Kill 98 � 100% of fleas within 12 hours Indicated for use in cases of flea allergy dermatitis