Size, cost, and safety are things to consider.
"Cleaning can be difficult" is not a sufficient reason to not buy something. It can be a factor, but everything else is to be taken with much more consideration.
I hope this helps!
~kaikers
1 in 5 kids are bullied but only about 30% of kids say they witnessed bullying
Ear canal (external auditory meat is)
The answer would behavioral issues D
Explanation: