worming question ...

My cat has a flea problem and i have the liquid flea treatment that you apply to the skin on the back of the neck.

I also have a worming treatment in similar form that you apply to the back of the neck.

My question is can i apply them both at the same time or should i apply them at different times.

If it is the latter , which should i apply first and how long should i leave before applying the other.

It would depend on what flea and worm products you have. Some are safe and some, not so much. I would be happy to help you if you could tell me what they are.