Simple use existing product's on the market like animal tranquilizer sold to domestic farmer's, with lifestock
create or find a potion to make the shark go to sleep
Dart frogs are found in the jungles of Central and South America. They were introduced into Hawaii in 1933 to control mosquitos. Dart frogs enjoy being in the leaf litter during the day, and sleep at night. They are always on the forest floor.
You have to look around the potion room to find the ingredients.
they hunt for their prey, keep an eye out for predators, find shelter when they need it, sometimes they look for mates, sleep, and females find places to lay their eggs.
The only potions I've ever heared of were: potion, super potion, hyper potion, and max potion, and you find them in the veilstone store or after you have the right amount of badges.
you can find a super potion in the golden rod department.
Find the three ingredients for a sleeping potion, and have the medicine man mix it and put it in a coconut. Feed it to the shark. (see related question)
there i no exact place you can find a dart board the objects you find on a walk are randomised to different places every time, hope that helps
In Southern Swamp, follow the monkeys to find the hag. Then, go back to the potion shop and talk to the other hag. Give the potion to the hag you found in the woods, and you get to keep the bottle.
The Nurse finds Juliet apparently dead in her bed. She has taken a potion that causes her to go into a deep sleep, leading her family to believe she has died.
You can't work for Dart - they're entirely owner/operators. You might find a job working for a fleet owner who leases onto Dart, but you'll never work directly for Dart.
in varrock behind the anvils, you'll see a picture of a potion thing i think