i just bought some micropur mp1 tabs and a few of them were crushed but were still sealed in the package. i was wondering if they were still good or if they should tossed. if they do need to be thrown away, why. (just for curiosity)

My guess is they are okay for now, but need to be used soon. Likely the bag they were in got punctured, and that will expose them to air, which could render them useless in a short period of time. Check the bag the crushed ones are in, and if it looks okay, maybe you can rely on them.

If the foil pack containing the tablets is intact then I'm sure it's fine, you just have to make sure to get all of the powder out into whatever container you're using for treatment.