I actually have quite a few jelly toys, and it is one of my favorite materials. I have yet to have one deteriorate. I don't use lubes with them (don't need it) And I wash them constantly, When I a done with them they get washed and air dried then cleaned once a week no matter what and then again before use. I use medium water and a light soap. I have never had one deteriorate or causer an infection so I keep going with it.
They make my insides burn. They also leach chemicals so even if you aren't getting infections nasty stuff is still getting inside of you. Plus they are porous and harbor bacteria no matter HOW well you clean them. There is no reason to use this when safer things are available.