Haddii qiimaha xoogga calaamadda Q ee lagu soo bandhigay M90 uu ka yar yahay 60, hababka soo socda ayaa lagula talinayaa si loo wanaajiyo:

1) Meel ka wanaagsan u guur.

2) Isku day inaad nadiifiso dusha sare ee tuubada, oo isticmaal isku-xidh ku filan si aad u kordhiso xoogga calaamadda.

3) Hagaaji booska qalabka gudbinta si toosan iyo si jiif ah; hubi in kala fogaanshaha qalabka gudbinta uu la mid yahay qiimaha M25.

4) marka walxaha tuubooyinka aysan ku habboonayn gudbinta calaamadaha ultrasonic; qalabkayaga gelinta kulul ee dusha sare leh ayaa lagula talinayaa.