Blood decals that stay in the world

Hello, I currently have a Niagara system setup that allows for some blood decals to be spawned in the world when the particles collide with something but, the particles obviously have a lifetime to them and don’t persist infinitely. How would I go about doing this? I guessed spawning decals with a blueprint actor but I honestly have no idea where to start.
Here’s what the blood looks like currently:
Video of current effect