Today I have fought our cat flea plague and the medication works, you can watch the fleas die. Here also the same a little warning if you edited heavily infested areas, where they previously could not suck, then these are then covered with red flea blood points. Particularly sensitive, light colored textiles we then sometimes indeed flea free but also dirty. For me, it concerned only some inconvenient places from scratching post, so it does not bother me. To complain about there but the bottle, she was a little expired already in the shipping container, suppte also during use and the fewer resources in the bottle was, the more she spit instead of spraying. Here would be rectified necessarily.