Whatever their specialty, marine biologists must have knowledge in biology, chemistry, physics, geology, and ecology. They need active learning and listening, critical thinking, complex problem solving, speaking, and writing skills.
Here's the lowdown: Flea collars do kill fleas. However they do it slowly. It takes about 4 days for a flea collar to kill a flea. In that amount of time, the flea has laid about 400 eggs. Then mom and dad flea die.Now 2 weeks later 400 newly hatched fleas jump onto Fido or Mittens. The flea collar again kills the newly acquired fleas....in another 4 days.ere's the lowdown: Flea collars do kill fleas. However they do it slowly. It takes about 4 days for a flea collar to kill a flea. In that amount of time, the flea has laid about 400 eggs. Then mom and dad flea die.
No more than one treatment should be given per day.. Effects on fleas may be seen as soon as 15 minutes after administration. Between 95% and 100% efficacy is observed within the first 6 hours and 100% efficacy is reached within 24 hours. To help prevent re-infestation, the additional use of a suitable treatment to control immature stages of the flea life cycle in the environment is recommended. If in doubt consult your veterinary surgeon.