Safer Brand Clothes Moth Alert Trap, 2-Pack. This economical and convenient natural pest control solution lures adult moths using powerful pheromones and then traps them. It lasts up to 12 weeks as it traps adult moths, not larvae. Hang the trap at eye level in closets and rooms to be protected, paying special attention to items containing wool, cashmere, or other animal hair. Use one or two traps for an average-sized room. Replace traps after 12 weeks.