2oz BOTTLE!!! Liquid Wormer 2X is used to prevent reinfestation of Toxocara canis in puppies and adult dogs. This can also be used on lactating female dogs after birth. For the removal of large roundworms, and hookworms, in dogs and puppies. The presence of these parasites should be confirmed by laboratory fecal examination. Consult your veterinarian for assistance in the diagnosis, treatment and control of parasitism.