 After oral administration in rats, novaluron treated with "chlorophenyl-14C", only about 6-7% of the administered dose was absorbed after a single low dose (2 mg per kilogram bodyweight).A single high dose (1000 mg per kilogram bodyweight) caused an absorption that was 10-fold less.In another experiment "[difluorophenyl-14C(U)]novaluron" caused an absorption of approximately 20%, but this number may be an overestimate due to cleavage of novaluron in the gastrointestinal tract.