I've heard lots of pros & cons about this. Right now there are many birds in the laying flock molting, and they're not producing many eggs. There was a bad infestation of roundworms early this summer & I gave them both Wazine & Ivermectin pour-on then. I've taken their water away tonight & am seriously considering giving them another dose of Wazine tomorrow.
And if Ol' Murphy is listening, he'll make them start laying more while I'm waiting for the withdrawal period to end!
And if Ol' Murphy is listening, he'll make them start laying more while I'm waiting for the withdrawal period to end!