We highly recommend Revolution. 
  (Made by Pfizer)
 
  To get the most out of your dollar, use Revolution. 
  Revolution takes care of all listed below. 

  Most Common:
  * Fleas
  * Ticks  
  * Most Mites  
  * Heartworms  



  It is also the least toxic and the only product recommended for small puppies/kittens and pregnant/nursing females.   
 
 As a standalone heartworm preventative, we recommend Iverhart Plus .