Can I use Petcor if I have already applied Frontline Plus to my dog?
Also, if I use Ultracide indoors, what should I use outdoors (concrete & wood deck)?
Yes, Petcor Flea Spray can be applied after Frontline or Advantage. This is because Petcor is a contact kill only and is for immediate results. Petcor will kill on contact but will not protect long term like Frontline or Advantage, so you can use the Petcor as needed. Ultracide is a great choice for indoor use. For outdoor use we recommend using a combination of Conquer and Archer IGR together in the same one gallon hand pump sprayer. They provide a great one, two punch and is our most popular sellers for outside flea control.
Answer last updated on: 12/17/2009