@Holly142 really cute listing!
Yes, raising your prices will help weed out the difficult guests. We started at $50 a night because we had no idea if there was even any market for an ABB in our area. Huge mistake! It took a few years of gradual price increases to get where are are now and we are still planning on raising them even more. The other places that are commensurate with our listing have also raised prices as we have, which really helps the overall host economy. The guests are more respectful overall and there is less complaining. Cheap nightly costs attract guests who want something for nothing. If you don't value your listing, they won't either.
We also recently put an "Easter egg" in our house rules to make sure people read it. When they book, we ask that they submit the phrase to show they explored this section of the listing. If they don't, we ask a lot of questions about their stay and they typically withdraw.
Remember, you don't have to do anything but respond to an inquiry. If a request to book is not a comfortable fit, decline saying why.