Pacific Biologics All-Trace Trace Element Boluses for Cattle 10 Doses

All-Trace Boluses for Cattle contain trace element and vitamin materials, coated with an inert polymer resin except for one open end. The boluses settle in the reticulum and gradually dissolve from the uncoated end, partly by dissolution and partly by abrasion of one bolus against the other. The boluses dissolve completely over eight months and leave no residue. All-Trace has an active life of 240 days.