This is the best place for spores !!! The sister shop Martian mushrooms are brilliant and have just recently replaced 1 out of 3 of my grow bags due to contaminated . The other 2 are fine and I'm looking forward to results. Really astonishing that a company is soo confident in their product that they offer this service. This is the first time this has happened! As I'm usually pretty lucky/clean and careful around but it happens to the best of us. After customer service confirmed that I did everything right and followed the guide they were happ to send a replacement grow bag. If I could give 6 stars I would :) Special thanks to kaz!! Really helpful guy.!! Look forward to doing business again in the future :)