When I was looking up the Betty Dodson's Vaginal Barbell
, I came across Betty Dodson's blog and personal review of her product. In the comments section there was someone who was saying that "sex toys should never be shared and cleaning with soap and water wasn't a good idea because soaps leave residues, so you should use toy cleaners only." Betty had replied with a comment saying this was a germaphobe's way of cleaning. However, you have to take into consideration the ingredients that are in your toy cleaners. Some of them are harmful as well.
If you want to spent the extra money for a toy cleaner, by all means do so. However, I never have. I wash all my toys with soap and water. I've never had any issues with residues. Just be sure to rinse them thoroughly.