i dont recommend sea sponge at all. years ago a punter was giving me oral and came back up a bit quick to tell me that there was a very bad smell down there....i nearly died of embarrassment and so did he. i rushed to the doctor who informed me there was a bit of sponge lodged up inside me and he had to get it out for me. It had caused an infection,hence the smell. After that,when i came on i just had a break from work for a few days and enjoyed the rest lol. Im older now and thank God dont have them anymore,happy days:)