Sergeant's Skip-Flea and Tick Shampoo for Dogs, Clean Cotton, Pet Supplies, 18 oz

what is the active ingredient in Sergeant's Skip-Flea and Tick Shampoo

Q:does this really help to get rid of my dog fleas

How offten can u use it? I would like to rid my house and yard of them and I know it'll take a while but I have house spray and this shampoo...

Is this shampoo to prevent fleas and ticks or to kill them once the dog has them? Also, my puppy is 7 weeks old. Can i use it on him?