is it safe to use mamy poko pants diaper????

Yes Kiruthika
it's absolutely safe to use disposable diapers. But do remember to change them. frequently to avoid diaper rash.
Have u considered using cloth diapers? These are absorbent, eco friendly and pocket friendly too.
Chk online for cloth diapers. Some brands u can look out for are Superbottoms, Bumberry etc.

yes.

Try Libero pants alternatively..

pampers is better