I mulched a housing complex for a HOA last friday. Saturday morning everything in the mulch beds was brown and dead looking. Needless to say the complaints were rolling like a fat boy to a twinkie. I had the deer in the headlight look. I thought maybe there was diesel fuel in the mulch. I read about sour mulch. I didnt remember an ammonia smell, but it didnt smell like fresh cut trees. We had a lot of rain, and some things came back a bit, but it looks terrible. Do anyone have any experience with toxic mulch.