How long after using silicone based lube in the butt can you safely use silicone toys?

As title states, how long should you wait after using silicone lube for ass play, before using a silicone toy? I wonder how long it takes to "flush out", so the lube doesn't hurt the silicone toy.

I know using a condom is possible, but it's for a butt plug, and I don't prefer using one with them. Just preference.

Thanks for any info!!