Please choose the correct solution to the question: how to remove weeds in patio cracks

Solution1: Generously pour boiling water in all of the cracks in your patio. You may need to repeat this method 2 or 3 times to see significant results

Solution2: Generously pour boiling water mixed with oil in all of the cracks in your patio. You may need to repeat this method 2 or 3 times to see significant results

Answer format: solution1/solution2
Answer: solution1