Terminator Pest Control can professionally handle your Carpet Beetle issues. New Zealand has several different types of carpet beetle, and it is the larvae or grub which does the damage. Adult carpet beetles simply fly into your home from flowers in your gardens etc. and lay their eggs close to skirting boards, and often underneath furniture so you dont see the damage happening until its too late. They only damage woollen carpets, and anything made from natural fibres, also woollen clothing. The grub burrows down into the carpet and chews on the fibres under the carpet, which then leaves bald areas of the carpet, after vacuuming. If you have woollen carpets, I recommend an annual spray just of the carpeted areas, with beds and furniture pulled away from the skirting boards. I also recommend that if you are replacing an old carpet with a new woollen one, to get me to spray all the flooring before the new carpet is Laid.