Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: What is the best way to clean these so that they can be reused?
Document: I've tried alot of things for jello shots and these worked the best so far. they're easy to get almost all the jello out and fun to use!! oh and they were really easy to clean, they were bigger then i expected as well so that was a plus.
A fun way to entertain friends... needed something exactly this size to make jello shots easy and fun to ingest. Capped so no worries about leakage. Come clean with just hot water rinsing. will buy more if I get more people wanting to party with me!! Cheers!
The best invention for Jell-O shots. Two thumbs up with a snap.EZ, EZ, EZ...no need for PAM...all of my guests enjoyed them too.
I purchased these because I got tired of trying to get Jello out of the little plastic cups. These make making jello shots so much easier (and less messy). They can also be reused which is a bonus.
Perfect for Halloween parties! Easy to fill and clean. A couple were cracked and unusable but for the price that was okay.
very easy to use, made a big hit at our Halloween party, very easy to clean also, would buy again is the need arises
These were great, easy to make and clean up.... just the right size for my birthday party, they were hit! Just remind everybody not  to throw them away before giving them out!
I bought these for my &#34;mad scientist&#34; themed Halloween party. They were a big hit! Very easy to fill, empty and clean.
Got these for my nursing school graduation party. They were a hit! Everyone asked where I got them from. Easy to make and dispose of. So easy clean up after the party. Thank you Amazon.
I loved these for my Halloween party! They were a great hit and I used red jello so it would appear like blood. Very fun, easy to clean and you don't get your fingers/face all sticky like you would with typical jello shots!
Answer: Pull plunger out of the top and run or soak in hot water. You just use sugar water inside so it dissolves easily