Thank you Josh for this information. We put a truckload of aminopyralid contaminated “organic” compost on garden beds February 2020, unknowingly. We were experimenting with no-dig Charles Dowding/Richard Perkins method – so compost was on top of the soil and not tilled/dug in. With decades of garden experience, I VERY QUICKLY saw major problems with our planting of peas, beets and more. We are located in Texas, a couple hours northwest of DFW. By summer 2020 news broke of major aminopyralid contaminations from horse manure from numerous horse farms in north Texas, both large and small operations. Two years later we are still observing problems noticeable with certain crops. If we had tilled/dug in, I will say the ONLY option would be removing the soils. No compost was added in 2021 because we had not yet found a supplier who would certify free of aminopyralid. (We have since located one 2hrs north in the ag region by Oklahoma City.) Best comparison on soil is the instantaneous and lasting damage done to human gut microbiome as good bacteria is destroyed when strong pharmaceutical antiotics are administered. And those destroyed bacteria do not regenerate on own. That’s how our soils are acting – you see certain plants not thriving as they should. We are pondering solutions. Like you, I am VERY leery of adding good certified compost to what looks like permanently damaged beds. The scale is small – only 1 truckload in 2020 – 70 feet of beds that we low-tunnel for winter greens then plant cucumbers, melons, squashes. I will use your “alternatives” suggestions rather than add any compost onto/into those soils. Part of me wonders if “non-affected” crops are truly non-effected. We’ve decided to create a new small bed for greens/winter root crops in tunnel. A nearby commercial dairy farmer guarantees their manure free of aminopyralid. He says cows will fail dairy testing if any ap in their feed. Info others might keep in mind. The takeaway? I second your advice on compost. 1) Do not use ANY compost that has horse manure or straw/chicken bedding as component without testing it for 6 weeks; 2) Sadly “organic” means nothing – especially on compost. There is no testing/regulations on what is used on the grass/straw or manure components. Big Box stores and even local garden centers simply don’t know those details. There are other options – may cost more $ or time. Hope this very long post is helpful for others. This crisis is not being broadcast loudly enough IMO. Thank you for your research and post.