Have and always had several u.Katzen hangover that could even out in the last few years, free nose, so to speak. My oldest got Frontline since market supply. Previously, there was nothing like it. She then gespeichelt some Std.heftig, has already scared me! That's a poison should surely be clear to everyone, must indeed, otherwise the vermin'd frolic on! Against ticks it affects about 2 wk., Against evtl.Flöhe much longer. However, this depends also very much on the cat, funnily enough! My Paul comes 6 Wo.damit clear Sputnik more than 3-4 wk., Then he has already ticks, particularly in spring and early summer! Advantage, bands etc.in each variation is mEjedenfalls for me a waste of money .... then i put my money equal to throw in the garbage! Have really tried everything on the market, Ökozeugs etc., I can totally forgot! Very annoying that you have to expect something like his animal, but ticks etc. are a nightmare and not dangerous, even for cats u.Hunde that can also etc.bekommen disease! Be sure to weight dosing, it therefore evtl.hat not worked in some. Can also be that there are now flea strains that have become resistant, but that I never had any problems! Why did my "big cat" Fuzzy always been the portion of kl.Hunde to 8 to 10 kg since he had a caliber of Cocker Spaniel size and weighed 8 kg! Probably culturing is resistance even when dosed to .... sparingly as with us humans when antibiotics! Hope I could give you a good information! Amazon is still afloat, since I can only praise, no exception had been! I also would not find that bad, can happen even once!