Removing bats humanly can be a tricky thing. Bats can compress to get into a gap of anything over a 1/4 inch. Typically a rule of thumb is, if you can fit a number 2 pencil in the gap a bat can get in. Bats sense air currents and can smell old guano, or bat feces.
To get rid of bats, the entire house needs to be sealed off leaving only a few one way doors for the bats to escape. Once all the bats leave the one way valves can be removed.
This time of year is big on finding bats in your living space. Often times juveniles will be curious and make their way around your home. If your experiencing bats in your living space most often you have bats living in your house.
Bats are a rabies vector species. Be certain to check yourself if you awake to a bat in your home, or if you were under the influence. Potentially you could have been bitten and not know it. If so, we always suggest having the bat tested and contacting your primary care provider as soon as possible.