Slipper socks - stop them slipping

Aw, go on, let them slide?

Peasblossom

Aw, go on, let them slide?

I know, I’m a spoil sport!! ?

Hmmm, what about stitching the soles with a length of that stuff on a roll which prevents rugs from slipping!
I use something similar on a slippery tray. Works a treat.

www.whistleandivy.com/7-tried-and-tested-ways-to-make-knit-and-crochet-slippers-non-slip/

I randomly googled your query, hope this helps.

Thank you both for the ideas!
I have ordered a sheet of suede and will see how that works out. ?
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My friend knits socks and slippers and told me she buys some special non-slip stuff which she puts in spots along the soles. She called it glue.

I found it:
www.hobbyandcraftshop.co.uk/products/sole-shoes-socksnon-slipglue100mlapplydotstexturehand-madeslippersblack?variant=45790148364¤cy=GBP&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&utm_campaign=gs-2018-10-05&utm_source=google&utm_medium=smart_campaign&gclid=Cj0KCQiA0fr_BRDaARIsAABw4EvQnFYPJj2XG06QP7UrFMn16-lwXxydPjvHMQpVZKWQzDgndo1mDzUaAvJLEALw_wcB

Other outlets are available

Oh, goodness, that nearly filled a page!

You can use silicon bathroom sealant on knitted socks to make them non slip. Honestly, that’s not a joke. There are tutorials on YouTube, I’m not smart enough to link
SILICONE SOLES, how to add non skid soles to knit and crochet slippers. This is the title of a film. I’ve done this and it really works . It’s flexible, stretchy and really nonslip but it does take ages to dry.

I second Callistemon's suggestion of those dot things - I've used them and, importantly, they work
Survived my brutally efficient washing machine too.