Give customers an additional service for free: Treat for fleas and ticks on carpets, furniture and floors, plus eliminate pet odors and leave a clean, fresh scent. NyGuard Plus is an easy-to-use aerosol with no-drip technology. It kills fleas and ticks and prevents flea re-infestation for seven months, the company says. Each can of NyGuard Plus treats more than 2,000 sq. ft.