I noticed lice on my black Silkies the other day...I assume lice because it was white and didn't move very fast. Hubby and I dusted everyone with Sevin last night. This morning I noticed a whole bunch of lice on the puffs of the Silkies heads. I read not to get Sevin around their heads, so my question is how do I get the lice off the top of their heads and around more sensitive areas?