If one of your pets has fleas you can be pretty sure all of them have fleas especially if they live in the same house. If the number of fleas is lower on the rest of your pets it might be because when you applied the product on her it is possible that the application was not done correctly, i.e. in the case of Frontline Plus directly on the skin, so the efficiency of the products was reduced in her case. If her protection against fleas is lower than the rest of the pets from your house she will “pick” all the fleas from all the animals. This is the only reason I can imagine why you spot fleas on her and less on the rest of your pets.
Because you have four pets in your household it is very important that the flea prevention is always up to date and that you use very good products. Also the way you apply the products is very important. Always read the manufacturer’s instructions for administration before using any veterinary medicines on your pets. If you do not follow all the rules of flea prevention you end up having an incubator for fleas with so many animals around.
All your pets should be treated at the same time
· Use top products
· If the degree of flea infestation is too high you need to treat your house at the time as your pets Prevent fleas all year around