How does the spacing and shape of the teeth on a small needle lice comb affect its effectiveness?

The spacing and shape of the teeth of a small needle lice comb are key factors in determining its capture efficiency and use effect. These two design parameters directly affect its performance in practical applications. The spacing of the teeth needs to be precisely adjusted according to the size and number of needle louse. If the spacing of the teeth is too wide, tiny needle louse are likely to pass through the gap, resulting in ineffective capture. Too large a spacing may also fail to cope with dense groups of needle louse, resulting in poor overall effect. Although too narrow a spacing can capture needle louse more accurately, if the design is not appropriate, it may cause excessive friction or damage to plant leaves, especially on some delicate plants. Too narrow a gap may also cause plant leaves to be torn or have minor abrasions.
The shape of the teeth of a small needle lice comb also plays an important role in the capture efficiency of needle louse. Generally, sharp teeth can effectively pierce the shell of needle louse or peel it off the surface of the plant. Sharp tooth tips can also reduce sliding friction, allowing the teeth to enter the plant surface more smoothly, thereby removing pests more efficiently. If the shape of the comb teeth is rounded or flat, it may affect the capture effect of small needle lice, especially when the small needle lice have begun to adhere to the surface of the plant, the rounded comb teeth are difficult to effectively remove them.
The curvature or angle of the comb teeth of the small needle lice comb can also affect the effect. The comb teeth designed to be slightly curved can better adapt to the curves of different plant surfaces, especially when the leaves have obvious undulations. The curved tooth shape can increase the contact area with the plant surface, thereby improving the accuracy and efficiency of capture. This design helps to comb every detail of the plant surface to avoid missing potential small needle lice.
The material of the comb teeth of the small needle lice comb is also an important factor affecting the effect. If the comb teeth are made of harder materials, such as steel or high-strength plastic, they can ensure that they maintain sharp edges during long-term use and are not easy to wear, thereby maintaining efficient capture capabilities. However, soft or easily worn materials, although the initial use effect is better, as the number of uses increases, the sharpness and capture effect of the comb teeth will gradually decrease, resulting in a gradual weakening of performance and affecting the stability of long-term use.