Holding the frogs prevents recapture bias and keeps the frogs in good condition. Buckets or coolers must have a top or the froglets will crawl out. If pickerel frogs are collected they should be kept in a separate container from other species as their skin secretions are toxic to other amphibians. We have found that different nets work best for different sites, and having a large net and a small net in hand can be useful for herding frogs. Inexpensive nets are often available at bait shops, or a potential source of inexpensive nets is provided at the end.
Some sites have such dense vegetation that capture of frogs with nets is nearly impossible.
Mason Neck Refuge in Virginia encountered such a problem so they tried electrofishing. This method proved effective and caused no apparent mortality. We also understand that seining with a fine mesh net can be effective. Once you have collected what you think is your 50-100 froglets, they should be processed. Please catalog each species separately.