Try orange oil instead (also called D-Limonene. Expensive but very concentrated and lasts for quite a while). There is food-grade diatomaceous earth (it's used in livestock feed) that is safe to use (still wear a mask, you don't want to breathe it or in your eyes) and there is "pool grade" for pool filters that is an imperfect and not particularly refined form. That's the nasty stuff to avoid.
New garden hose stretched out more, other old hose moved. A very large toad trying to look invisible in the deep recess of a cinder block next to the faucet.