Right now, 3 neonicotinoid pesticides (neonics) are banned here and in other European countries after they were found to pose a risk to bees.
But the ban doesn't extend to some important crops such as wheat - and they are under constant attack from pesticide firms and the National Farmers Union.
A review of the ban is currently taking place.
And the Brexit vote means the UK's pesticide rules could eventually be completely rewritten.
The government must back a permanent ban on neonicotinoids.
And promise that any future pesticide regulations will protect nature and human health.
Three years ago the use of some pesticides called neonicotinoids was restricted across Europe because they were found to pose a "high acute risk" to honeybees.
The scientific evidence of the threat to all bee species is overwhelming. And now they're implicated in the decline of butterflies and birds too.
A recent application by the National Farmers Union to use neonics on oilseed rape crops was backed by pesticide firms but rejected by the government.
But the restrictions will be reviewed early in 2017 and Brexit could see UK pesticide rules completely rewritten.