I was back filling a septic tank with sand. Guess oil could be in sand or the plant is in bare ground around the tank. Funny its only on my calves.
Its bad this year took last technu spray from store.

I got poison oak last january hiking in short in Las Trampas in East Bay. After that i wore pants.

Maybe you carried in some firewood? The oil is still active years after the plant has died.

It's the oil from the plant.

If someone was burning it - that could have done it.

If a pet rolled in some? That too.

Oh you're in CA - it's still around out there - all year round I imagine.

I'm so fortunate I have not turned up allergic to that yet. Everything else in the world? But not those plants.