Our promise
Guaranteed success
from day one.
At the heart of our grow kits is a simple promise: you get healthy, thriving mushrooms, or we make it right. We take the risk, guesswork and frustration out of growing at home so you can order with absolute confidence.

The cover
The 7-day contamination-free shield.
Every single block is prepared in sterile conditions, fully colonized, and sealed inside an airtight filter-patch bag before it leaves our facility. We guarantee your block arrives 100% clean, viable, and ready to fruit.
If you spot any signs of mold, green growth, or contamination within 7 days of receiving your order, you are fully covered under our shield.
Three steps
How our hassle-free
guarantee works.
Take a quick photo
Snap a clear picture showing the area of concern on your sealed bag within your first 7 days.
Reach out to support
Send your order number and photo directly to our customer care team at info@tellymonstermyco.com.
Get a fast replacement
Once verified, we pack and ship a brand-new replacement block straight to your door at zero cost to you.
Why we do it
Why we offer this guarantee.
We offer a 100% replacement guarantee because we are the absolute best at what we do and we unconditionally stand behind our products. We refuse to let our customers take on any risk when buying from us. Our facility operates under uncompromising quality control, using state of the art sterile protocols and premium substrate blends to grow incredibly strong, aggressive mycelium.
Because we handle the delicate colonization phase in controlled lab environments, our kits carry the highest success rates and lowest failure rates in the industry. We know our process works, and we know our bags deliver. Offering a fast, no questions asked replacement within your first week is not just a policy for us. It is the proof that we stand by our quality, value your trust, and promise you a successful harvest every single time. You focus on growing, and we cover everything else.
| What is covered | Mold, green growth or any contamination |
|---|---|
| How long | 7 days from the day your order arrives |
| What you send | Your order number and one clear photo |
| What you get | A brand-new replacement block |
| What it costs | Nothing |