First Defense Calf Bolus

I've been using First Defense boluses on new born calves for the past 8? years. I can't say enough good things about it. Somewhat spendy at just over $7 a pill, but saving just one calf makes it worth it.

 

I only have 3 pills left from last year, so I'm trying to get some more, as I will start calving in 4 weeks. Every store around here is sold out. I looked online too and every place I looked says they're backordered. Does anyone on this site know of a comparable product? I would like to stay with a bolus.

 

Paul N

First Defense Calf Bolus