Hello I have a 28 month labrador and from the moment I got her she has been difficult to flea using spot on -the vet recommended Bravecto an oral flea treatment. The first time she took it was a little off colour the second time was very lethargic lost weight and generally not herself. The 3rd time she bcame quite poorly and lost a lot of weight quickly. While this may have been a coincidence I did not want to risk it again. Now my problem is do I try spot on again(because she won't stay still I am not sure the liquid actually touches her skin. She knows the minute the capsule appears and run off and that's before I open it! )I have tried using different things and pretending to do it so she gets used to me fiddling with her coat in that area but she's too clever and knows the difference! Sorry this is so long - does everyone agree that fleaing is essential?