I have noticed red bites on me and after brushing my cat several times i found one flea. They have had them in the past i thought i had gotten rid of them. I have rats and guinea pigs as well. Does anyone know if they will spread to them and if so can i use revelotion and if yes what dosages would i give and would the cat revolution for 5-15lbs be ok to use on the rats/guinea pigs?If not what treatment is best for the small animals?