Zodiac Spot on Flea & Tick Control "Spot On" For Dogs 16-30lbsFor small dogs 16-30lbs. Four monthly treatments. Each applicator kills & repels fleas, ticks & mosquitoes for up to 30 days. Contains insect growth regulator (IGR) to kill flea eggs and prevent reinfestation. Unique applicator design helps prevent misapplication. 4 month supply.Powered by eCRATER . List your items fast and easy and manage your active items.