Spazzum, on a completely non-frog-related note, the thread you replied to is very old. I noticed you're new, so if you want to start a new thread with its own title you will probably get more responses and less confusion than posting on an old one

I agree with pretty much everything Greg said. Though, if you are not handling a frog for very long, just washing your hands without soap is generally okay, they really shouldn't be handled often. There is nothing wrong with adding enrichment items to your frogs' habitats (like putting tubes in an aquatic frog's enclosure), but taking them out and handling them for extended periods (especially frogs like pacmans that prefer to stay burrowed and still most of the time, and aren't designed to hold onto things or climb) will stress them out. I couldn't tell if you were just using water or if you meant you used disinfectant on the items you put your frogs on, but I would advise against using any sort of disinfectant on anything your frogs touch. Even very small amounts of most household cleaners can kill a frog if they come into contact with it. One other thing to look out for is that exposure to water that hasn't been dechlorinated and deaminated can harm frogs as well (you didn't mention whether the water you were using was treated or not).
There are safer ways to interact with your frogs that don't pose as much of a risk to them; better safe than sorry!