A:AnswerI don’t think so
Debris or bugs get pulled into the canister and there is a filter blocking anything from falling back out or crawling back out
You have to pull out the filter cap in order to empty the debris.
A:AnswerIt takes quite a while. Until all the lights light up on it. I can’t say how long it will charge. You just have to buy one and find out for yourself. And no batteries included.