What's a much easier way to clean an ash tray?

Question

I've had this ashtray for about two years. I washed it out only once with soap and warm water, which was a bit of a hassle and still was fully clean.

Any suggestions on a better way to clean it?

Answer 1

Oven cleaner, any sort, even the cheap stuff from those really cheap "pound/thrift stores" - it's not as hard to get off as burnt-on grease in an oven, but washing up liquid won't do it unless you scrub.

Just spray it with oven cleaner, then leave it to soak for a couple of hours & it should just rinse clean.