To see no effect

Have the above items bought because my 10 year old Jack Russel bitch (7.4 kg) does not tolerate the classic white flea collars.
I use Frontline now now in the third month, but my dog ​​bites still occasionally (but only begins in September its main itch season and I now have in mind already that Frontline will alleviate their suffering when they are already on the legs begins to bite). In the last two months I was allowed to her already remove three ticks ...