What degreaser you been using? Looks like you’ve been scrubbing it some on the door pic. So results turned out good. Advantage of hot water is you’ll need a lot less scrubbing, if any doing them that often, and it will go faster on the cleaning. But good job with what you have.
I do a lot of commercial concrete and other than needing to pump spray right in front of doorways a little, I just usually downstream degreaser. If a real bad large dumpster pad where there a lot of heavy grease I’ll use my little Ryobi 12v sprayer to put on like a 50-50. A lot quicker than having to unroll and roll up another hose. Did a video review on it here about a year ago. But I use between 135-175 degree heat depending on how bad.
It’s handy for a lot of things but realistically if just a small area like you have in front of door I’d just pump spray it, let it dwell, for about 5-10min then downsrtream regular degreaser mix with warm water(about 125) and the grease will just break down, could almost just rinse off 1/2 the time.
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