If you wet that black grit (that is what I call it), watch and see turn red ! Flea waste.....blood that they have sucked from their food supply.

Terriable that your Tigger is allergic to the flea treatments... I would be concerned that if he is allregic to the topical treatemnt, that he may be allregic to the injectable stuff... Can they test him somehow, before giving him a full does?

(I am a Mom and I worry about such things)