To judge whether an organic fertilizer granulator is easy to use, the following key factors can be considered:

1. Granulation efficiency: A good organic fertilizer granulator should have efficient granulation capacity, be able to fully press the raw materials into uniform particles in a short time, and improve production efficiency.

2. Particle quality: The organic fertilizer particles manufactured by the granulator should be uniform, moderately dense, not easy to break, and can provide stable nutrient release and use effect.

3. Convenience of operation: The operation of the organic fertilizer granulator should be simple and intuitive, easy to adjust and maintain, and the operator can quickly get started and ensure production efficiency and particle quality.

4. Energy consumption and cost: A good organic fertilizer granulator should have reasonable energy consumption and operating costs, and be able to maintain economy in long-term use.

5. Reliability and durability: The parts of the granulator should be made of wear-resistant and corrosion-resistant materials, have good durability and reliability, and be able to maintain a stable working state under long-term high-intensity use.

6. Safety: The design of the granulator should meet safety standards, and relevant safety protection measures should be taken during operation to prevent accidents.

Taking all the above factors into consideration, you can judge whether an organic fertilizer granulator is easy to use by observing the machine's production efficiency, particle quality, ease of use, energy consumption cost, durability and safety. In addition, you can also refer to other users' experience and evaluation to get more practical feedback and information.