Inventory control techniques are methods and strategies that businesses can use to manage their inventory levels, ensure that they have the right amount of inventory on hand, and minimize the cost of holding and managing inventory. Here are some common inventory control techniques:

1. ABC analysis: ABC analysis is a method of categorizing inventory items based on their value and usage. Items are grouped into three categories: A items (high value, low usage), B items (moderate value, moderate usage), and C items (low value, high usage). By categorizing inventory items in this way, businesses can focus their attention on managing their most valuable and critical items.
2. Just-in-time (JIT) inventory: JIT is a production and inventory control system that involves ordering and receiving inventory just in time for it to be used in production. This helps to reduce inventory holding costs and minimize the risk of inventory obsolescence or spoilage.
3. Economic order quantity (EOQ): EOQ is a mathematical formula that helps businesses determine the optimal order quantity to minimize the total cost of ordering and holding inventory. The EOQ takes into account factors such as order costs, holding costs, and demand.
4. Safety stock: Safety stock is extra inventory that is held to ensure that businesses have enough inventory on hand to meet unexpected demand or supply chain disruptions. The amount of safety stock required will depend on factors such as lead time, demand variability, and supplier reliability.
5. Reorder point: The reorder point is the level of inventory at which businesses need to place an order to replenish their stock. This is calculated based on factors such as lead time, demand, and safety stock.
6. Consignment inventory: Consignment inventory is inventory that is held by a supplier or vendor on behalf of a business, with the business only paying for the inventory once it has been used or sold. This can help businesses to reduce their inventory holding costs and minimize the risk of excess inventory.

Overall, inventory control techniques are critical for effective inventory management and can help businesses to reduce costs, improve efficiency, and enhance customer satisfaction. By using these techniques to manage their inventory levels, businesses can ensure that they have the right amount of inventory on hand to meet customer demand, without tying up too much capital or storage space.