What kills a tick immediately?

What kills a tick immediately includes high heat, certain chemicals, and physical methods, though complete control requires treating environment and pets as well. The fastest way to kill ticks on contact is high heat, as ticks die instantly at temperatures above 120 to 130 degrees Fahrenheit, so washing clothing and bedding in hot water above 140 degrees and drying on high heat for 30 minutes kills all stages immediately, and steam cleaning above 200 degrees kills on contact instantly. Submerging ticks in rubbing alcohol or isopropyl alcohol 70 percent kills quickly within minutes, so placing removed tick in sealed bag with alcohol kills it. Insecticides and acaricides containing permethrin, pyrethrins, or other tick killers kill on contact when sprayed directly, though many require direct contact and may take minutes to hours, and permethrin treated clothing kills ticks that crawl on it within minutes to hours. On pets, veterinarian prescribed oral tick preventatives like fluralaner and afoxolaner kill attached ticks within hours, some within 2 to 4 hours. Drowning in soapy water kills within minutes as soap breaks surface tension. Physical crushing with tweezers kills but should be done carefully to avoid contact with pathogens, washing hands after. For immediate kill after removal, place tick in sealed bag with rubbing alcohol or flush down toilet, as flushing removes tick. However, no single method kills 100 percent of hidden ticks in yard, so integrated approach is needed.