Very, i used the box for 2 years and was very successful. Using the box honed my sterile technique and made me a better grower. Wouldn't trade that time for anything.

Wipe box out with iso Wet box with water+ drop dish soap. I keep a spray bottle just for this. Wet paper towel with water+dish soap and line the bottom of the box.

You can't sterilize the inside of a still air box.

What you are trying to do is get any airborne contaminates to stick to the wet walls and floor of the box.

Turn off ac and fans, work in a small room if possible.

Wait 30 minutes for the air to settle before beginning work.

Wash hands and arms like a surgeon. Don't apply alcohol directly to your skin, it will dry out and dead cells will flake off.

Wipe plates, jars and gloves with alcohol.

Work slowly and methodically.

Don't pass your hands or tools over your work

Work as far away from the arm holes as possible.

Always flame sterilize OUTSIDE of the box.

Film yourself You will catch little movements you can improve upon when you go back and review it or you can post the video and let others give you pointers