Talstar P Professional Insecticide can be applied once a month outside for fleas.
Talstar P is labeled for chiggers, fleas and ticks outdoors at 1 fl oz per gallon of water per 1,000 sq ft. Treatments for chiggers should begin in May and could need to continue through the summer as new chiggers move into the area. Treating the entire lawn is of little benefit because chiggers avoid direct sunlight and normally will not infest areas that are mowed or otherwise well maintained. Focus treatment on the unkempt areas of the lawn and lawn edge.
You can mix Talstar P with Precor IGR for flea control. According to the new Talstar P product label you can make applications as spot or crack and crevice treatments to areas frequented by pets, such as under bedding, rugs, next to furniture. Vacuum prior to treatment.
What this means is that you cannot broadcast spray your entire carpet with Talstar, you must limit the treatment to "spot" treatments (areas that 2ft x 2ft or less). If you only need to spot treat certain areas you can use Talstar for fleas. If you need to broadcast over entire carpeted rooms you should choose a product which is labeled for indoor broadcast sprays such as Onslaught or Permethrin SFR.