You can find the poison in the boiler room,the cup in the chest in the attic,the ice in the fridge,and the lamp in the fireplace.(You'll have to use the stuff in the boiler room to light it.)
to the duengon in early poptropica
No. You can't. All of the treasures are turned in to the ghouls at the end of the game, anyway.
The object of the Haunted House is to recover 4 treasures hidden in the house. Once you have them, the ghost cat will tell you how to use them. (For solutions, see the related questions)
No they don`t.
You don't have to mix them. Collect all four "treasures" from the house and then ask the ghost cat (right of the kitchen) where to take them. (see related question)
Once you have all four treasures, the ghost cat will tell you where to take them. (You are going back to the graveyard near the quest entrance.)
Fill the lantern with kerosene in the basement. When you have all four treasures, talk to the ghost cat to the right of the kitchen. (see related question)
The gravestones are in the cemetery to the right of the house. When you have all 4 treasures, and fueled the lantern in the basement, talk to the ghost cat and he will tell you to go to Betsy Blue's gravesite.
Once you have all 4 treasures, get fuel from the kerosene barrel in the basement and see the ghost cat, who will send you to the grave of Betsy Blue in the cemetery.
The way you came in. You go out the basement door. When you have all 4 of the treasures, and have fueled the lantern in the basement, the ghost cat will tell you where to go in the graveyard.
You need all 4 treasures (and fuel for the lantern, in the basement) before the ghost cat will tell you where to take them. There should be a new hole next to the tombstone of Betsy Blue in the graveyard (the crying angel).
Talk to the ghost cat (in the room to the right of the kitchen) for information. This is the final stage of the game, in which you take the 4 treasures (chalice, lantern, ice, and draught) to their destination. (see related question)