Was just wondering if anyone has seen or used these? The idea looks interesting, and it seems to logically make sense to do it. They say they have no smell, best part, and they get planted directly in soil when ready. Any thoughts?
Never heard of them but it sounds like a good idea. 
The manure is very acidic and can cause issues with seedling development. Much better off to use seed starter mix in a neutral container. Coco or peat with no nutes and minimal water.
Very interesting. I was just thinking that as we amend our soils, I usually will use some chicken or steer manure when turning over or mixing with fresh soil when doing no-till style. That’s why it seemed like a good idea, not as a replacement, but as an addition.
@darren I used them twice and did not have acidity problems, but it seemed that the were restricting root growth. Second year when used cut them open when transplanted and did better. Not using them further for weed. Maybe for next years tomatoes to use them up. Or chop them up and use as a soil amendment… No improvement over Solo cups to start. Happy growing.
Thanks all. I had/have used the peat cups before but they are not really additive to the soil. Where I was thinking a little splurge of sterilized cow manure would be good. I completely agree with cutting or breaking them open as you are planting. I have to do that with the peat cups too or it seems to restrict the early growth. Always like to get opinions and get a second set of eyes on it.
Just to add, the cups dont break down fast enough either which would cause root bound issues down the road. Ive used em before, but once i realized they werent breaking down, i tossed them.
Thanks for letting me know @ChittyChittyBangin