Decaffeinated coffee has some caffeine, but the 2 to 4 mg in an 8-ounce cup is a smidgen compared with the caffeinated version. The lethal dose of caffeine is about 10 grams, which is equivalent to the amount of caffeine in 100 cups of coffee. Caffeine gets absorbed in the stomach and small intestine and then distributed throughout the body, including the brain.
It isn't a lethal trap or poison, but a remarkably simple formula containing â¦ castor oil! In fact, in a Michigan State University study, a castor oil-based repellent was effective in 26 out of 27 tests. Product Details. Apply to lawn areas where mole activity is present.
Many bugs find the scent of essential oils repellant. Roaches are no exception. You can create your own homemade roach spray using completely non-toxic essential oils. The most effective oils at repelling roaches are cypress oil and peppermint oil. To make a non-toxic roach spray, mix 8 drops of cypress oil and 10 drops of peppermint oil to half a cup of water. Spray the mixture anywhere you have roach issues. The added benefit is that these oils smell lovely.