"An engorged female is fertilized by a male while still on the dog. She falls off after mating and seeks a sheltered area in which to lay her 1,000-3,000 eggs." Useful article on the life cycle of a tick and how long can they survive without a blood meal
Advantix Dog 25kg Plus X/Large 4's & 6's - Advantix kills and repels deadly paralysis ticks. It also kills fleas fast, and kills and repels brown dog ticks and bush ticks. Advantix also repels mosquitoes, sandflies and stable flies that can make your dog's life a misery.