Do you have one and how often do you use it??

I have a fisher price one that also has a vibrate finction. Both Bella and Hamish love it, but I feel bad when I put bub in it... Im not sure why! I feel like its not good for them?? Like it will do them damage??

So if you have one how often would bub be in it and how many hrs over the space of a day??

H like to sit up due to a bit of reflux - and he can see around him - but I get the guilts up if he is in there longer than 20 mins at a time... and I feel even worse if he sleeps in it!

Im not sure why i feel bad about it....