I'm no expert, but I believe that yes the risk does reduce over time, especially as it dries out. However, I'm pretty sure you can still get Legionnaire's Disease from garden soil even if it's not bagged compost, the risk is just lower.

[–] NoRamyunForYou 4 points 1 year ago (1 children)

Geez, did a bit of digging/mixing and all that with a mask on, and it was pretty hard! Better continuing using one when I first open up the bags.

[–] Dave 2 points 1 year ago

Yeah, it's a good idea. I think it's recommended to keep it wet to reduce the amount of airborne dust as well.

[–] Floofah@lemmy.world 3 points 1 year ago (1 children)

AI response, hope this helps …

Legionnaires' disease can decline if the compost is infected and has been spread on the garden. However, the exact amount of time it takes for the bacteria to die off depends on a number of factors, including the type of Legionella bacteria, the temperature and moisture conditions, and the presence of other organisms in the soil.

In general, Legionella bacteria prefer warm, moist environments. They can survive for long periods of time in water, but they are more susceptible to drying out. When compost is spread on the garden, the Legionella bacteria are exposed to sunlight and other environmental elements, which can help to kill them off.

However, it is important to note that Legionella bacteria can form spores, which are very resistant to environmental conditions. Spores can survive for months or even years, and they can germinate and start growing again if conditions are favorable.

Therefore, it is important to take precautions when working with compost, even if it has been spread on the garden for some time.

[–] NoRamyunForYou 4 points 1 year ago

Makes it sound really scary. Better do a lil bit more research as to actual risk levels etc.