General treatment

You cannot eliminate a flea problem by treating the person which has been bitten. Neither powder, nor sprays or ointment has effect in this regard. The only rational thing to do is to find the hot bed and eradicate the fleas, where they are found in the house. If the itching is so bad that there is a danger that you might scratch a hole, it may help some to apply a local anesthetic on the bite. The remedies that pharmacies sell for relief of sunburn are excellent for this situation.