I have twins and fought previously with 2 problems which were naturally extremely annoying and doubly urgent to optimize.
Either they ran out and I was constantly and everywhere afterward wipe,
or they stopped halfway tight, but my son gritted sucker / straws or whatever was intended to put into his mouth, from.
I want to say I had all popular models that exist in the baby accessories (various types of NUK, Nubi, Avent ...) and either I had one thing or the other problem.
These bottles that finally comes to an end, even color-perfect, even if it had not been a reason to buy, pink for the lady, green for men and blue for the big brother on the go.
To the bottle to rinse just take apart completely and put all the parts in the dishwasher.
Finished, thank your MAM bottles are the hit :-)