Complex sentence: If the beads are threaded onto string, a porous material, they cannot be fully disinfected, they should not be shared between partners without using a physical barrier such as a latex or neoprene condom to prevent the presence of feces.
Split into simpler sentences: If the beads are threaded onto string, a porous material, they cannot be fully disinfected. They should not be shared between partners without using a physical barrier such as a latex or neoprene condom to prevent the presence of feces.