The message
from "dave @ stejonda" contains these words:

In message , David W.E. Roberts
writes
We have had this problem - best thing we found was an old towel with
one end dipped in the pond so there was a damp pathway for them to
travel.

...off to find an old towel...

Marital hazard alert..do check the age of the towel with Mme Stejonda
before offering it to frogs :~}

Janet