Apr 30, 2013 - 09:22 AM
Premise 2 contains a chemical known as Imidachloprid. It is a non-repellent insecticide termiticide that is in the nicotinoid family of pesticides. It is basically a nicotine based derivitive, at least that is what we were always told. It kills the termites through standard nerve toxin effects, the way that most insecticides work.
Premise kills the termites slowly, but contrary to what you might read, does not have the same "domino" effect on termites and ants that Fipronyl or Termidor has. In other words, Imidachloprid will kill termites, but in my experience and opinion won't kill the colony. It is very effective as a treatment, just not as effective as Termidor or Taurus SC. Premise kills termites on contact when wet, or within a few days after it has dried.
Termidor (fipronyl) is a super slow acting insecticide termiticide that is also non-repellent. Its affects on termites take up to 60 days. Fipronyl kills the termites through a different process, and is basically what is called a "cell degenerator". It basically kills the termites as it kills their cells. Its a very slow process. Fipronyl can also be passed from Termite to Termite through grooming and social interaction. This way it can have an affect on the entire colony causing the colony to go into a downward spiral and eventually decline. Total colony elimination has never been proven, but if the termite colony is 95% reduced in size, it is no longer a factor. It can also take years to rebuild.
The most important thing to remember about Premise is that is lasts about 3-5 years. Termidor has testing is many USDA test plots in the USA where is has lasted 18+ years.
Here are the links -