Source: Glen Arnold, Field Specialist, OSU Extension (edited)
This winter there have been a few questions about fertilizer license and spreading poultry manure. According to Senate Bill 1 (SB 1), passed a few years ago, any farmer handling, receiving, or applying poultry litter (or any other manure) from a PERMITTED farm in Ohio must have either a fertilizer license or a Certified Livestock Manager certificate or be a Certified Crop Advisor. If you have nay questions, call the Knox County Extension Office at 740-397-0401.