If you don’t mind a bit of Heath Robinson approach something similar to P20 solution works pretty well.
You’ll need to buy a jerry can or something to hold the water in and it’s not a nice one box solution but in my experience they work well.
I’m on my second unit, the first unit lasted about 5 years of good operation used multiple times a week over winter eventually a seal inside the pump perished and it lost pressure. I’ve had the second unit almost 2 years now and it’s doing fine.
My second unit was much smaller about the size of a brick and doesn’t have as much pressure as the first but its still plenty to shift claggy mud and if you use a brush you don’t need high pressure just an adequate flow rate which they provide.