I do not think you can open it
jump on the spray think near it and try to jump in
All you have to do is ask your mom :D
you take it to that man near the school
the code for the locker is in the pine tree near the school
you have to
Go to the trashcan close to the fun house, if you haven't put the lid on it get it from the ride next to the cotton candy (just get on top of the carts and bring it to the trashcan near the fun house) then move the trashcan to the cotton candy stand and open lid. Look in the trash till you find empty bag of popcorn and refill it at popcorn stand. Then take it to the beach where the lady is laying down and put it there then she will leave. Use metal detector to find car keys. Give them to the lady standing next to the fun house and she will give you the flip-flops.
you get it from a farmer near the mill
you will give it to someone there at the guy near the wishing well.(in early poptropica)
Give it to the man near the well in the old town in early poptropica.
First make sure you met Greg's grandpa and completed the game. After that, a man would be standing near the school asking for it.
Go the man by the truck near the school, got to your items and press use on the fluid. Then pour the correct amount.
The head quarter in poptropica on spy island is near the HAIR CLUB