TECHNU FIRST AID GEL 2 OZ TUBE by STAPHASEPTIC. $9.26. Technu First Aid Gel is an antibiotic free first aid gel with lidocaine for minor cuts, burns and bug bites. First aid antiseptic gel is breathable to promote healing and help prevent infection. Contains Benzethonium Chloride .2% and Lidocaine 2.5%. 2 oz tube.