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Disadvantages:

➢ Risk of Contamination: The pit method can lead to wild animals and pests attracting compost

and threatening earthworms.
➢ Dependence on Environmental Conditions: Excessive rainfall or temperature changes can
affect the efficiency of the earthworms and the decomposition process within the pit.

➢ Limited Capacity of the Worm Bed: The capacity of the worm bed within the pit may be
limited. It may be necessary to create more than one pit to decompose large quantities of organic
waste.

➢ Slow Decomposition Process: The pit method may have a slower decomposition process than
some other composting methods.

As a result, the vermicomposting pit method is a convenient and cost-effective composting option for
small gardens or limited spaces. It provides a natural decomposition of organic waste using natural
earthworms and allows you to obtain valuable fertilizer for your plants. However, some disadvantages

must be considered, such as the risk of contamination and dependence on environmental conditions.
When choosing the composting method, you should choose the most suitable option according to the
needs of your garden and your available space.

2.2.3. Bin Method

The most common method for small scale composting is bin composting method (Figure 5). The bin

method is prepared to use in small scale such as home composting, in kitchen or garage and so on. The
bin can be made of various materials, but wood and plastic ones are popular. Plastic bins, because of
lightness, are more preferred in home composting. A vermicompost bin may be in different sizes and

shapes, but its height must be more than 30 cm. bins with a height of 30-50 cm, and not so more than it,
are perfect. Draining some holes in bottom, sides and cap of bin is so helpful to aeration and drainage.

Around 10 holes with 1-1.5 cm in diameter is a good choice. Before feeding the worms by wastes it's
needed to apply a worm's bed. A height of 20-25 cm bedding is appropriate. It may be a mixture of
shredded paper, mature compost, old cow or horse manure with some soil [17].

Advantages:

➢ Low Space Requirement: The vermicomposting bin method requires less space than other
composting methods.

➢ Low Cost: The bin method is a cost-effective composting option. It does not require special
equipment or systems.
➢ Easy Applicability: Vermicompost bin is a practical and easy-to-use composting method. It

requires no special knowledge or skills.
➢ Productivity: Bin system allows more airflow. It promotes a productive ecosystem.

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