Swarms of Mosquitoes on my patio led me to an old home remedy - Did you know that chopped up garlic makes mosquitoes disappear? I buy minced, dried garlic at local Fiesta grocery stores and sprinkle it around on my patio. I have to stand back as I am using it - mosquitoes will literally swarm out of your plants and bushes to get away from the smell. Works like a charm!! Going to try this next year.
The last works well with studying! I always studied right before sleep and would even put my book under my pillow so my subconscious self would be 'reminded' of my studying. I regularly would wake up going over the details of the information.