What are some potential barriers of cleaning bleach?

Im not sure how correct these are but i hope they help :)

some potential barriers are 
youd have to wait for the chemicals to clear up before goiun gback into that room if u have kids that r little you would have to make sure they dont lick wutever it is u cleaned otherwise it might poison them and if u use to much of it it could make the air poisoness for a few which could be dangerous toi breathe in.
again im not to sure how correct these r but i hope they were right and i hope they help :)