Hello there! I hip just adopted my first gerbil in an aquarium tank. I was trying to make a second floor out of cardboard but he kept slipping off so I poked holes in the ramp. He didn't like the platform so I removed it and put the ramp in his cup. About a week later I discovered that he was using the ramp as a toilet. I am going to show you how to make that toilet. (Note: this might not work for everyone, though it usually takes a week to start working)
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Step 1: Supplies
All you need is some cardboard and a pair of scissors. However it is suggested that you have a knife with a sharp end also.
Step 2: Tile
For this step all you need to do is cut out a tile of cardboard.
Step 3: Poke the Holes
Finally you need to poke holes in the cardboard with the ends of your scissors or knife.
Step 4: Thanks
Thanks for reading my first Instructable. I hope this works for you because it increases the time between cleans. Remember to leave it out for about a week.