These cannot be snared or rooted. A Gamite frog CAN be, altho high resists.
I find the best way to charm kite these froggies is not use snare at all. You can land dots on these from extreme distance even unsnared and the unsnared charmed frog has a better chance of getting the froggie target's attention if he is unsnared himself. THis is somewhat riskier druid play but there's always the zone-out at close hand, and then there's instant evac once you get the AA.
This comes from playing a 65 druid on Agnarr.