However , researchers do not recommend using sea sponges as tampons , as they may contain dirt and microorganisms , especially if poorly sanitized .
Sea sponges were used as tampons by females throughout history and are still used as a cheaper and more eco-friendly alternative to fibre ones .
Researchers do not recommend using sea sponges as tampons , as they may contain dirt and microorganisms , especially if poorly sanitized .
Sea sponges were used as tampons by females throughout history and are still used as a cheaper and more eco-friendly alternative to fibre ones .