Oh boy.. Pats going the route of Jack Wattley now! Wattley got into Dart frogs in a big way in his latter years.
https://joshsfrogs.com/sp/dendrobate...attley-dart064
I haven't kept poison darts Pat.. always was too worried for the cats. I have kept quite a few other tree frogs though.
I did have some good experiences with Mantella frogs at a local petshop I helped out at. .. they are from madagascar and come in poisonous and not poisonous species. Though unrelated to Darts they look just like them and fill similar niches.
Sounds like you will be having alot of fun with them. Enjoy!