Help My Dogs Get rid of Fleas! Need effective bug/flea/ant/spider killer!

the first week i got my puppy, she was getting ticks, but they were ending up on me and in my house.. anyway, right after that, i went to the vet, got some frontline and asked if i could use a repellent with it.. she said yes.. so, i went to the petstore and bought Zodiac puppy/dog/cat/kitten flea and tick repellent.. its supposed to last about 2 months.. i put the frontline on and the repellent and the dog has NEVER seen a flea or tick, ever, and she is 5 months old now.. so, thats what i would do