I have a cat that has been infested with fleas, since then i’ve given her a bath with flea shampoo on sunday, applied the onspot, and have put a flea collar on her. After the bath, I noticed some fleas still alive. So I put the onspot and flea collar on her. Last night (monday) I was combing her, and noticed one live flea. I’m not sure if there were more. So I was wondering what do I do?