We picked up 2 kittens at a farm that was giving them away. I noticed right away that they had fleas. I brought them home and bathed them in dish soap. Then, this morning (day #2), I applied Hartz OneSpot flea treatment. Tonight I noticed there are still fleas. Can I rebathe them? Will it wash off the flea treatment? Shouldn't they be dead by now? How long should I wait. Please tell me quick!