Comox Valley RCMP are warning about door to door solicitation targetting seniors. Recently a few companies have been canvassing door to door conducting air-quality surveys and using unscrupulous tactics, which lead to aggressive vacuum sales, police said Thursday. Free gifts are sometimes offered as a way to gain entry. Some of these vacuums can cost thousands of dollars , so read the fine print and know what you are signing, RCMP advise. If you have elderly relatives, help them take precautions and consider encouraging them to grant power of attorney to a trusted family member. Some credit card companies offer fraud alert notifications and your local bank branch can be helpful with your concerns.Door-to-door sales require a business licence from your local municipality and this can be verified by contacting your local municipal office. — Comox Valley RCMP