I really don't like when the kids squirt their bath toys and a grayish mold comes out due to not getting all the water out. Its disgusting! I've tried using a bleach cleaner but I really don't have the time/energy to do that after every bath time.
Some of the toys worked and some did not. If there was a slight bit of water in the hole, it didn't work well. I don't think those toys will be airtight, but other toys did remarkably well. I am curious to see how long the glue holds before I have to repeat the process.