Is it necessary to disinfect pots before reusing them?

I see your point.
However, at the moment, for some reason no doubt unrelated to my gardening skills, the life of the plants in my care tends to be unusually short :D

 

Well, I scrubbed the first batch of pots with a bit of washing up liquid and lots of elbow grease.
Then I went for the cheapskate route, and had them soak in a solution of scalding water and stong vinegar, before rinsing them clean.

They look like new and I have decided that if any pest managed to survive that, it probably deserves to conquer my garden, and perhaps in time the world.

Thanks everybody for all the advice

 

Never have, waste of my time. so says my lush green huge plants and garden.