Hi, my two cats, Tabitha and Daisy have got fleas. Although they are house cats,(we live too close to a busy road) . There is a cat from a few houses away that thinks our block of flats is her home, and people let her in, this is how my girls have got them.Can anynone tell me how to get rid of them safely?, as i can't use the usual methods as i have 2 fisk tanks. I have tried the homemade flea trap,plate,honey and a night lite but it didn't work. Thanx