Very handy tool that works perfectly once you know what to do.
If you have a number of bends in your pipe work, you can get it through a bit more difficult. But in that case it is useful if you have an extra help, then one person can operate the gun and the other can push the hose in with 2 hands.
Should have removed the siphon for convenience. The snake pushes forward, as it were.
I almost gave up but once I got it deeper it was clean like never before . So it depends on how far the blockage is, whether it is not easy.
But the leadership has never gone through so well, so definitely recommended.