I've just been in and noticed the same. The ones in store aren't sprayable
The actual product on sale in pound stretcher is different from the one coat fence life. It’s timber care that they sell which is inferior. One coat fence life (pictured above) can be applied by brush or sprayed on and has a deeper penetration in to the wood. All you discounters and supermarkets sell the cheaper alternative (timber care).
RONSEAL - NEVER does what it says on the tin
One Coat this year then another coat next year ... This stuff does not last long.