It depends on type
Of spider. Wash area of bite with warm water ; soap.
Dry. Apply antibiotic
ointments. But seek medical care asap if you think a spider bit you ; you have fever
, severe pain (can be felt at bite site ; possibly chest, back or abdomen); abdominal cramping /rigidness or ulceration
of skin at site. You may need a tetanus shot
(if you don't know when your last shot was or it has been > 10 years). Also.