Hi everyone. Yesterday I noticed that the cat has fleas, 1st time, he is 2. On my sisters advice I gave him a warm bath just water to try and drown anything crawling and dried him off. Went and bought Frontline and put it on teatime ish. Today he is still scratching so I had a quick look and have just seen a flea 
Please help and tell me what to do now. I feel so sorry for him.
thanks.