Hi All,
I am a rep and don't bash other companies, prefering to sell on the merrit of our products and factual information of both our and other products- it does wonders when everyone knows the truth.
To answer the non- rep questions regarding fleas and applying FLP (whether or not it is a post from a non- FLP rep trying to stir up crap or a real problem).
Lets start at the very beginning. Years ago when fleas were a HUGE problem, vets used to take the time to explain the flea life cycle to their clients as well as sell them hundreds of dollars worth of products to get rid of the infestation. And they would tell the owners to come back in 3 weeks to get another load of products to do the same thing. Today, pet owners think that any and all flea/ tick products should work instantly- this is the world we live in now- instant gratification. It doesn't happen like that, no matter if it is bayer, FD, Summit, Lilly or Merial products. Moving ahead to the flea life cycle.
There are 4 stages of the flea life cycle and owners only think about the adult flea, which makes up only 5 percent of the actual population. Eggs acount for 50%, Larvae 25% and Pupae 10%. Adult fleas can lay 20-50 eggs a day after they have a blood meal, and eggs aren't sticky, so they roll off into the environment. Once they hatch into larvae, flea larvae can travel up to 2 feet, and they HATE light, so travel to places under furniture. Next you have the pupae stage. These suckers are almost impossible to kill outside of a lab. In their cocoon, pupae can lay dormant for 6+ months if there is nothing that triggers them to bloom. Things like CO2 and vibration can instigate them to hatch but if that doesn't happen then they'll lay dormant. This is why you will start seeing a "bloom" after applying FLP because it is killing the adult fleas on the pet, and the IGR in FLP is working on the environment killing the eggs and larvae. What your seeing on the pet with the "new" scratching is the pupae's hatching into new immature fleas and jumping back on the pet. You want your TREATED and I emphasize treated pet (and all pets both dog/ cat need to be treated) to act like a vacuum to suck up all the newly hatching fleas because once they jump on your treated pet, they will come in contact with the FLP adulticide/ IGR. It can take as much as 3 months (which means 3 applications) to kill an infestation because of all the flea stages in the envirnoment and the pupae's hatching out. If you have an infestation, you also have to treat the environment as well as the pets. Just because you may stop seeing fleas doesn't mean you should stop a flea/ tick control because just 2 fleas can start an infestation in an unprotected home.
I hope this answers your questions. I tried to be brief and to the point. If you have any more, please post.