BioCeres WP is pretty amazing - the shipping was not good
This stuff works great. You really need a good magnifying glass to see it, or just notice that the stupid flea beetles get decimated by the stuff. However, it's a pretty perishable product. If you keep it around 40-50, you can get more-or-less a year of shelf life out of it. Unfortunately, it was shipped postal service without any indication that it should be kept cool. It wasn't a problem until it hit my black mailbox in the sunshine. Luckily I happened to check my email and see that it was delivered and ran to the mailbox so I could quickly put the bag in the fridge.