If the holes are tight these issues will be favorable to you; but if, on the contrary, they are wide you will end up losing everything you had won. Seeing other people using a strainer means that, in real life, they do not accept you as you are and that this attitude will make you suffer.
Colander Dream Interpretation
To use a colander in a dream reveals the arrival of lawsuits and legal problems because of material issues.
[1]Colander Dream Meaning
(See Sieve)
[2]