Weight Loss Due to Rodents (\( L_r \)):

\[ L_r = C \times D \]

Where:

• \( L_r \) is the weight loss due to rodents, in kilograms (kg).
• \( C \) is the coefficient, in kg/day (0.0036 for mice, 0.020 for small rats, 0.035 for big rats).
• \( D \) is the storage period, in days.