Table 3: Antimicrobial reduction scores.

Growth Compared to the Negative Control Antimicrobial Scores
No growth or > 95% bacterial reduction 4
Growth density was 60–95% bacterial reduction 3
Growth density was 40–60% bacterial reduction 2
Growth density was 5–40% bacterial reduction 1
Growth density comparable to the negative control or less than 5% bacterial reduction 0

Note: The negative control is the growth of bacteria without the tested solution.