Excellent strips to deal with black dots, if used correctly can work wonders, and the price for a cheap sampler! It should take at least 1 times the weight of their very small, in my parcel they fit already at the end of shopping while watching something inexpensive and fun in the probes, and even so, and weighed a little, in general, quite in the spirit of our mentality :). At full price likely would not take, and for 50 cents if it would be possible bought more than once ...