Yes. You have to clean them very well, which for me is very anticlimactic after using them. And depending on what you have, there can be little ridges and grooves that can be very hard to clean. My dildo had grooves which proved hard to clean as well as my butt plug, which still smells like *** no matter how hard I clean it, what cleaner I use, or how hot the water is when I clean it. And the type of material (porous/non-porous, rubber, glass, etc.) of the toy can affect the way you clean it. And if it has batteries, you have to take it out when you clean it and you're not supposed to keep the batteries inside the toy when not in use.

Cleaning the toy is a big reason why I don't use toys often.