Pet Supplies

I have never had this problem before. I have one puppy and 2 kittens. I have had animals in the past, and would only have to put advantage on them once every two or three months. Now we literally have to put flea medicine on them every 1 1/2- 2 weeks. It is supposed to last a month…so why are they getting so many fleas? Is there anything I can do? All of my pets past and present are allowed into the front and backyards…so that can’t be something unique to this “batch” of animals . Would spraying my backyard work?
Thanks for some insight

What is the best, Frontline, Advantage or K9 Advantage.
I have 1 dog (chihuahua) and 2 cats.
Could i just get some flea medicine for dogs and still use them on my cats?
And to save a little bit more money, could i get flea meds for dogs 21-55lbs and divide it up for my 3 pets?

with flea shampoo and they keep coming back what do i do? It wasn’t like this when he was a baby. It’s quite frustrating

We put the proper dose of Advantage on them yesterday. We vacuumed the carpets real well, put flea power over the carpets and let the powder sit for a few hours. Today (the next day), i am still seeing live fleas on the animals and around the house. I have never had carpets before the animals used to be indoor only animals. Now the animals go outside and I have carpets. How long does it take? I will be vacuuming everyday now. Can someone give me some in site? I want these things GONE!

He has long fur & I usually comb him twice a day -just to keep his fur nice- but I don’t want to mess up the ‘medicine’. Also is it alright to pet/scratch him like normal… I have been avoiding his neck area…. Any help would be great Thank you.