Fleas

[Notaboutthebass]

I treated my dog with Advantage 4 days ago, he seems to still be scratching. Do I wait longer before applying another pipette? The instructions are too vague!
Thanks

Is it definitely fleas that are causing the itching?

Some fleas are currently immune to some flea treatments, I don't know if this is one of them?

If it is fleas causing the problem then I'd ask the Vets which flea treatment they recommend for your DDog and for your home