Vauxhall Meriva meriva 2007 washer bottle blocked

Washer bottle had been blocked for over a year, motor runs but water just dribbled from the jets, checked the jets all ok, removed the pipe from just near the bonnet hinge. operated the motor again, still no water coming out.
Googled the problem, most people reckon to remover the bottle ( a six hour job) and clean out the filter. But being an ex engineer I thought there must be an easier way.... So found an old 4lt garden sprayer the type with a pipe and hand held nozzle pipe. I removed the solid pipe from the flexible and connect it to the pipe that comes from the washer bottle. filled the sprayer bottle with hot water and a little washing up liquid. Connected up and reverse flushed the system. Wow the stink was incredible as the water started to flow out of the filler. The crap flowed out as the bottle was back flushed, when the sprayer bottle got to empty the washer bottle rattled and soap bubbles came out. I refilled the sprayer bottle a few times, and continued to back flush with large lumps of crap flowing out until there was clear water coming out of the washer bottle filler. Refilled the wash bottle, disconnected the sprayer, tried the washer motor and wow the pressure was amazing, reconnected the washer pipe to the jet pipe and magic it fired water over the roof.........This worked for me, took 10 mins at the most, try it before you embark on a long job of removing the washer bottle. Alan M.