Step 1. complete shark tooth island, early poptropica island and the haunted house (see walkthroughs) and then buy dr. hare's secret lab from the store.

step 2. arriving at a smaller version of 24 carrot (in it's bad state) go into the door and keep going right until you find a door with dr. hare's logo on it. then push the boxes onto the switches. (if you can't push a box up push it down the hole at the bottom and jump in yourself. you will arrive at the top again with the box.) but while you're doing that avoid the guards. DO NOT TRY TO FREE THEM. THEY ARE WORKING FOR DR. HARE AND THEY ARE PAID TO DO IT. IT IS NOT LIKE 24 CARROT ISLAND.
then go to the laser beam doors (not the electric ones. they are not doors.) and collect the glowing key cards.

step 3. go out the door and go onto that moving floor and then when you reach the top talk to the man wearing a rabbit eyepatch and then do what he says with the keycards.

happy hopping in your RABBOT suit.

by a certain Finn.

NOW LET'S GET TO WORK!

pps. when you have completed this place say "I've completed dr. hare's secret lab on Q&A.