Stainless steel comb with micro-grooved teeth; Removes lice and nits safely; Easily combs nits out of hair; without harm to hair! Used in all types of hair; Safe and Effective It can be used Multiple times. Application method: Short-haired dog -- the knot of hair comb with the comb first and then use a comb to comb the hair sticky. Long-haired dog the dog hair pulled up by hand can see the lower part comb with the comb and knot of hair and take away the broken hair. Leave room to hold the knot of villi with open knot tie set aside part of the comb to comb gently. Don't overexert when encountered scleroma so as not to break down pull hold the comb hair root part again. Pet hair encountered in the blade is easy to fracture when combing the strength should be measured. As early as possible to remove hair and knotted line harden may need to cut short as a whole.