Does frontline flee medication work 4 dogs? what flee medication works 4 ur dog?? (11 points to best answer)?

first of all i have two small dogs with TONS of flees.. honey is a 1 yr old chihuahua terrier mix, and hope is a 3 yr old maltepoo. i bathe the dogs 3 times a month with rlly good soap and brush out their flees a couple times a week. while we r gone during the day the pups r kept in our garage in a in-closure with their beds,food,water,n toys things like that.. in the gate in-closure they have a doggie door to get out to our backyard.. the main thing u would wonder is, is there grass. no all is concrete.. so that is basically our backyard.. just boarding concrete... well its rlly starting to frustrated me because of how often i have to bathe and clean their flees out with a flee comb.. we have been using frontline flee medication ever since the dogs were old enough to use it.. and no our house isnt a pig pin and rlly clean and not gross and dirty.. so i was wondering since frontline is sooo expensive r we wasting money by paying $80 to buy frontline? i believe it doesnt work because i apply it once a month (like it says to do) after i give the dogs a bath and i put it were it belongs in between their shoulder blades.. so does frontline work for u??? r u having the same problem as i am having... if u dont even use frontline but use a different brand of flee medication PLEASE PLEASE PLEASE tell me what u use and if it actually works! :P thank u sooo much! :P